Skylake (microarchitecture)#Mainstream desktop processors

Skylake's development, as with previous processors such as Banias, Dothan, Conroe, Sandy Bridge, and Ivy Bridge, was primarily undertaken by Intel Israel at its engineering research center in Haifa, Israel.{{cite web|url=http://knowledge.wharton.upenn.edu/article/intel-israel-old-relationship-faces-new-criticism/|title=Intel in Israel: A Old Relationship Faces New Criticism|website=Knowledge.wharton.upenn.edu|access-date=January 24, 2018}} The final design was largely an evolution of Haswell, with minor improvements to performance and several power-saving features being added.{{cite web |url=https://arstechnica.com/information-technology/2015/08/the-many-tricks-intel-skylake-uses-to-go-faster-and-use-less-power/ |website=Ars Technica |publisher=Condé Nast |access-date=7 November 2021 |date=August 19, 2015|title=The many tricks Intel Skylake uses to go faster and use less power}} A major priority of Skylake's design was to design a microarchitecture for envelopes as low as 4.5W to embed within tablet computers and notebooks in addition to higher-power desktop computers and servers.[http://news.techtime.co.il/2015/09/02/intel-4/ Intel Introduced its 6th Generation Intel Core] Published September 2, 2015, techtime.co.il

In September 2014, Intel announced the Skylake microarchitecture at the Intel Developer Forum in San Francisco, and that volume shipments of Skylake CPUs were scheduled for the second half of 2015. The Skylake development platform was announced to be available in Q1 2015. During the announcement, Intel also demonstrated two computers with desktop and mobile Skylake prototypes: the first was a desktop testbed system, running the latest version of 3DMark, while the second computer was a fully functional laptop, playing 4K video.{{cite web |last=Shvets |first=Gennadiy |date=September 10, 2014 |title=Intel announces Skylake microarchitecture |url=http://www.cpu-world.com/news_2014/2014091001_Intel_announces_Skylake_microarchitecture.html |website=CPU-World |language=en-US |access-date=January 24, 2018}}

An initial batch of Skylake CPU models (i5-6600K and i7-6700K) was announced for immediate availability during the Gamescom on August 5, 2015,{{cite web|url=http://www.techpowerup.com/213616/intel-to-debut-its-core-skylake-processors-at-gamescom-2015.html|title=Intel to Debut its Core Skylake Processors at Gamescom 2015|work=TechPowerUp|date=June 19, 2015 }} unusually soon after the release of its predecessor, Broadwell, which had suffered from launch delays.{{cite web|url=http://www.valuewalk.com/2014/09/intel-corporation-launching-broadwell-skylake-chips/|title=Intel Corporation Launching Broadwell, Skylake Chips Back to Back|work=ValueWalk|date=September 16, 2014 |access-date=October 17, 2014}} Intel acknowledged in 2014 that moving from 22 nm (Haswell) to 14 nm (Broadwell) had been its most difficult process to develop yet, causing Broadwell's planned launch to slip by several months;{{cite web|url=http://www.anandtech.com/show/8367/intels-14nm-technology-in-detail|title=AnandTech – Intel's 14nm Technology in Detail|author=Ryan Smith|website=Anandtech.com|access-date=January 24, 2018}} yet, the 14 nm production was back on track and in full production as of Q3 2014.{{cite web|url=http://hexus.net/tech/news/cpu/74481-intel-broadwell-skylake-client-cpus-launching-2015/|title=Intel Broadwell and Skylake client CPUs both launching in 2015|website=Hexus.net|date=September 9, 2014 |access-date=January 24, 2018}} Industry observers had initially believed that the issues affecting Broadwell would also cause Skylake to slip to 2016, but Intel was able to bring forward Skylake's release and shorten Broadwell's release cycle instead.{{cite web |last=Hruska |first=Joel |date=July 14, 2014 |title=Intel's 14nm puzzle: As Skylake details leak, everybody asks – is the chip coming in 2015 or not? |url=http://www.extremetech.com/computing/186210-intels-14nm-puzzle-as-skylake-details-leak-everybody-asks-is-the-chip-coming-in-2015-or-not |work=ExtremeTech |language=en-US |access-date=October 17, 2014}}{{cite web |last=Arora |first=Piyush |date=October 15, 2014 |url=http://seekingalpha.com/article/2563875-intel-skylake-development-appears-to-be-on-schedule |title=Intel: Skylake Development Appears To Be On Schedule |website=Seeking Alpha |access-date=January 24, 2018}} As a result, the Broadwell architecture had an unusually short run.

Officially Intel supported overclocking of only the K and X versions of Skylake processors. However, it was later discovered that other non-K chips could be overclocked by modifying the base clock value – a process made feasible by the base clock applying only to the CPU, RAM, and integrated graphics on Skylake. Through beta UEFI firmware updates, some motherboard vendors, such as ASRock (which prominently promoted it under the name Sky OC) allowed the base clock to be modified in this manner.{{cite web |last=Porter |first=Matt |date=February 9, 2016 |title=Intel puts a stop to overclocking on non-K Skylake CPUs |url=http://www.pcgamer.com/intel-puts-a-stop-to-overclocking-on-non-k-skylake-cpus/ |website=PC Gamer |language=en-US |access-date=February 9, 2016}}{{cite web|title=Intel Skylake Non-K OC KOed by ASRock|url=http://hexus.net/tech/news/mainboard/90323-intel-skylake-non-k-oc-koed-asrock/ |website=Hexus |date=February 5, 2016 |access-date=February 9, 2016}}

When overclocking unsupported processors using these UEFI firmware updates, several issues arise:

• C-states are disabled, therefore the CPU will constantly run at its highest frequency and voltage
• Turbo-boost is disabled
• Integrated graphics are disabled
• AVX2 instruction performance is poor, approximately 4-5 times slower due to the upper 128-bit half of the execution units and data buses not being taken out of their power saving states
• CPU core temperature readings are incorrect

These issues are partly caused by the power management of the processor needing to be disabled for base clock overclocking to work.{{cite web|title=Non-K overclocking|url=http://wiki.hwbot.org/Skylake_overclocking#Non-K_overclocking|website=hwbot.org|access-date=May 5, 2021|archive-date=May 5, 2021|archive-url=https://web.archive.org/web/20210505135344/http://wiki.hwbot.org/Skylake_overclocking#Non-K_overclocking|url-status=dead}}

In February 2016, however, an ASRock firmware update removed the feature. On February 9, 2016, Intel announced that it would no longer allow such overclocking of non-K processors, and that it had issued a CPU microcode update that removes the function.{{cite web |last=Cutress |first=Ian |date=December 11, 2015 |title=BCLK Overclocking Intel's non-K Skylake Processors: Coming Soon |url=http://www.anandtech.com/show/9848/bclk-overclocking-intels-non-k-skylake-processors-coming-soon |website=AnandTech |language=en-US |access-date=February 9, 2016}}{{cite web|title = It's official: Intel shuts down the cheap overclocking party by closing Skylake loophole|url = http://www.pcworld.com/article/3031255/hardware/its-official-intel-shuts-down-the-cheap-overclocking-party-by-closing-skylake-loophole.html|website = PCWorld|date = February 8, 2016|access-date = February 9, 2016}}{{cite web|title=Yes, you can overclock cheap Intel Skylake chips|url=http://www.pcworld.com/article/3014498/hardware/yes-you-can-overclock-cheap-intel-skylake-chips.html|website=PC World|date=December 11, 2015|access-date=February 9, 2016}} In April 2016, ASRock started selling motherboards that allow overclocking of unsupported CPUs using an external clock generator.{{cite web|url=http://www.extremetech.com/extreme/224561-new-asrock-motherboards-sport-external-clock-generators-for-intel-cpu-overclocking|title=New ASRock motherboards sport external clock generators for Intel CPU overclocking {{!}}|website=ExtremeTech|date=March 11, 2016 |access-date=April 10, 2016}}{{cite web|url=http://akiba-pc.watch.impress.co.jp/docs/news/news/20160407_752021.html|title=独自OC機能を備えたH170マザーがASRockから登場、計2モデル - AKIBA PC Hotline!|last=株式会社インプレス|website=AKIBA PC Hotline!|date=April 7, 2016|language=ja-JP|access-date=April 10, 2016}}

In January 2016, Microsoft announced that it would end support of Windows 7 and Windows 8.1 on Skylake processors effective July 17, 2017; after this date, only the most critical updates for the two operating systems would be released for Skylake users if they have been judged not to affect the reliability of the OS on older hardware (until July 31, 2019; August 2019 critical update requires at least Windows 10), and Windows 10 would be the only Microsoft Windows platform officially supported on Skylake and on later Intel CPU microarchitectures beginning with Skylake's successor Kaby Lake. Terry Myerson stated that Microsoft had to make a large investment in order to reliably support Skylake on older versions of Windows, and that future generations of processors would require further investments. Microsoft also stated that due to the age of the platform, it would be challenging for newer hardware, firmware, and device driver combinations to properly run under Windows 7.{{cite web|title=Skylake users given 18 months to upgrade to Windows 10|url=https://arstechnica.com/information-technology/2016/01/skylake-users-given-18-months-to-upgrade-to-windows-10/|website=Ars Technica|date=January 16, 2016|access-date=January 16, 2016}}{{cite web|last1=Bott|first1=Ed|title=Microsoft updates support policy: New CPUs will require Windows 10|url=https://www.zdnet.com/article/microsoft-updates-support-policy-new-cpus-will-require-windows-10/|website=ZDNet.com|publisher=CBS Interactive|access-date=January 16, 2016}}

On March 18, 2016, in response to criticism over the move, primarily from enterprise customers, Microsoft announced revisions to the support policy, changing the cutoff for support and non-critical updates to July 17, 2018, and stating that Skylake users would receive all critical security updates for Windows 7 and 8.1 through the end of extended support.{{cite web|title=Skylake support on Windows 7 and 8.1 given a one-year extension|url=https://arstechnica.com/information-technology/2016/03/skylake-support-on-windows-7-and-8-1-given-a-one-year-extension/|website=Ars Technica|date=March 18, 2016|access-date=March 18, 2016}}{{cite web|title=Microsoft backtracks on Windows 7 support deadline|url=http://www.computerworld.com/article/3046032/windows-pcs/microsoft-backtracks-on-windows-7-support-deadline.html|website=Computerworld.com|date=March 18, 2016|access-date=March 18, 2016}} In August 2016, citing "a strong partnership with our OEM partners and Intel", Microsoft stated that it would continue to fully support 7 and 8.1 on Skylake through the end of their respective lifecycles.{{cite web|last1=Larsen|first1=Shad|title=Updates to Silicon Support Policy for Windows|url=https://blogs.windows.com/business/2016/08/11/updates-to-silicon-support-policy-for-windows/|website=Windows business blog|publisher=Microsoft|access-date=9 May 2017|language=en|date=2016-08-11|archive-url=https://web.archive.org/web/20170425131840/https://blogs.windows.com/business/2016/08/11/updates-to-silicon-support-policy-for-windows/|archive-date=April 25, 2017|url-status=dead|df=mdy-all}}{{cite news|last1=Jo Foley|first1=Mary|title=Microsoft extends again support for Windows 7, 8.1 Skylake-based devices|url=https://www.zdnet.com/article/microsoft-extends-again-support-for-windows-7-8-1-skylake-based-devices/|work=ZDNet|publisher=CBS Interactive|access-date=9 May 2017|date=2016-08-11|language=en}} In addition, an enthusiast-created modification was released that disabled the Windows Update check and allowed Windows 8.1 and earlier to continue to be updated on this and later platforms.{{cite web |url=https://www.theinquirer.net/inquirer/news/3008609/theres-a-patch-to-reinstate-windows-7-81-on-kaby-lake-cpus |title=There's a patch to reinstate Windows 7 & 8.1 on Kaby Lake CPUs |website=Theinquirer.net |access-date=January 24, 2018 |archive-url=https://web.archive.org/web/20191222033451/https://www.theinquirer.net/inquirer/news/3008609/theres-a-patch-to-reinstate-windows-7-81-on-kaby-lake-cpus |archive-date=2019-12-22 |url-status=unfit }}

As of Linux kernel 4.10, Skylake mobile power management is supported with most Package C states supported seeing some use. Linux 4.11 enables Frame-Buffer Compression for the integrated graphics chipset by default, which lowers power consumption.{{cite web|url=http://www.phoronix.com/scan.php?page=news_item&px=Linux-4.11-FBC-Skylake|title=Linux 4.11 To Enable Frame-Buffer Compression By Default For Skylake+ - Phoronix|website=Phoronix.com}}

Skylake is fully supported on OpenBSD 6.2 and later, including accelerated graphics.{{cite web |url=https://www.openbsd.org/62.html|title=OpenBSD 6.2|access-date=10 October 2018}}

For Windows 11, only the high-end Skylake-X processors are officially listed as compatible.{{Cite web|title=Windows processor requirements Windows 11 supported Intel processors|url=https://docs.microsoft.com/en-us/windows-hardware/design/minimum/supported/windows-11-supported-intel-processors|access-date=2021-10-05|website=docs.microsoft.com|language=en-us}} All other Skylake processors are not officially supported due to security concerns.{{Cite web|date=2021-06-28|title=Update on Windows 11 minimum system requirements|url=https://blogs.windows.com/windows-insider/2021/06/28/update-on-windows-11-minimum-system-requirements/|access-date=2021-10-05|website=Windows Insider Blog|language=en-US}} However, it is still possible to manually upgrade using an ISO image (as Windows 10 users on those processors will not be offered to upgrade to Windows 11 via Windows Update), or perform a clean installation as long as the system has Trusted Platform Module (TPM) 2.0 enabled,{{Cite web|last=Warren|first=Tom|date=2021-08-27|title=Microsoft won't stop you installing Windows 11 on older PCs|url=https://www.theverge.com/22644194/microsoft-windows-11-minimum-system-requirements-processors-changes|access-date=2021-10-05|website=The Verge|language=en}} but the user must accept that they will not be entitled to receive updates, and that damage caused by using Windows 11 on an unsupported configuration are not covered by the manufacturer's warranty.{{Cite web|last=Hollister|first=Sean|date=2021-09-21|title=Windows 11 won't stop older PCs, but it might make you sign this waiver|url=https://www.theverge.com/2021/9/21/22686457/windows-11-health-check-compatible-supported-cpu-old-pc-waiver|access-date=2021-10-05|website=The Verge|language=en}}{{Cite web|last=Hollister|first=Sean|date=2021-08-28|title=Microsoft is threatening to withhold Windows 11 updates if your CPU is old|url=https://www.theverge.com/2021/8/28/22646035/microsoft-windows-11-iso-workaround-no-update-guarantee|access-date=2021-10-05|website=The Verge|language=en}}

Image:Intel CPU Core i7 6700K Skylake perspective.jpg

Image:Intel CPU Core i7 6700K Skylake bottom.jpg

Like its predecessor, Broadwell, Skylake is available in five variants, identified by the suffixes S (SKL-S), X (SKL-X), H (SKL-H), U (SKL-U), and Y (SKL-Y). SKL-S and SKL-X contain overclockable K and X variants with unlocked multipliers.{{cite web| url= http://hexus.net/tech/news/cpu/80786-intel-skylake-s-desktop-cpus-expected-idf-2015-august | title = Intel Skylake-S desktop CPUs expected at IDF 2015 in August | date = February 17, 2015 }} The H, U and Y variants are manufactured in ball grid array (BGA) packaging, while the S and X variants are manufactured in land grid array (LGA) packaging using a new socket, LGA 1151 (LGA 2066 for Skylake X).{{cite web |url = http://wccftech.com/intel-14nm-skylake-leak-multiple-edram-configurations-desktop-variant-tdp/|title = Massive Intel 14nm Skylake Leak – Multiple eDRAM Configurations and Desktop Variant to have Configurable TDP|date = June 27, 2014|access-date = June 28, 2014|website = WCCFTech|publisher =WCCFTech Prvt. Ltd. |last = Pirzada|first = Syed Muhammad Usman}} Skylake is used in conjunction with Intel 100 Series chipsets, also known as Sunrise Point.{{cite web |url=http://www.techpowerup.com/200486/intel-core-skylake-cpus-accompanied-by-100-series-chipset.html |title=Intel Core Skylake CPUs Accompanied by 100-series Chipset |website=Techpowerup.com |date=May 5, 2014 |access-date=May 8, 2014}}

The major changes between the Haswell and Skylake architectures include the removal of the fully integrated voltage regulator (FIVR) introduced with Haswell.{{cite web|url = http://wccftech.com/intel-abandon-internal-voltage-regulator-skylake-microarchitecture/|title = Intel to Abandon the Internal Voltage Regulator (IVR) with Skylake Microarchitecture|date = June 5, 2014|access-date = June 28, 2014|website = WCCFTech|publisher = WCCFTech Prvt. Ltd.|last = Pirzada|first = Syed Muhammad Usman}} On the variants that will use a discrete Platform Controller Hub (PCH), Direct Media Interface (DMI) 2.0 is replaced by DMI 3.0, which allows speeds of up to 8 GT/s.

Skylake's U and Y variants support one DIMM slot per channel, while H and S variants support two DIMM slots per channel. Skylake's launch and sales lifespan occur at the same time as the ongoing SDRAM market transition, with DDR3 SDRAM memory gradually being replaced by DDR4 SDRAM. Rather than working exclusively with DDR4, the Skylake microarchitecture remains backward compatible by interoperating with both types of memory. Accompanying the microarchitecture's support for both memory standards, a new SO-DIMM type capable of carrying either DDR3 or DDR4 memory chips, called UniDIMM, was also announced.{{cite web

| url = http://www.techpowerup.com/205231/how-intel-plans-to-transition-between-ddr3-and-ddr4-for-the-mainstream.html

| title = How Intel Plans to Transition Between DDR3 and DDR4 for the Mainstream

| date = September 14, 2014 | access-date = November 19, 2014

| website = techpowerup.com

}}

Skylake's few P variants have a reduced on-die graphics unit (12 execution units enabled instead of 24 execution units) over their direct counterparts; see the table below. In contrast, with Ivy Bridge CPUs the P suffix was used for CPUs with completely disabled on-die video chipset.

Other enhancements include Thunderbolt 3.0, Serial ATA Express, Iris Pro graphics with Direct3D feature level 12_1 with up to 128 MB of L4 eDRAM cache on certain SKUs.{{cite web|url=http://wccftech.com/intels-6th-generation-skylake-processors-scheduled-2h-2015-5th-generation-broadwell-spring-15-updates-2015-2016-mobility-roadmap/|title=Intel's 6th Generation Skylake Processors Scheduled For 2H 2015 – 5th Generation Broadwell in Spring '15, Updates 2015–2016 Mobility Roadmap|work=WCCFtech|date=November 24, 2014}} The Skylake line of processors retires VGA support,{{cite web|title = ARK {{!}} Intel® Core i7-6700K Processor (8M Cache, up to 4.20 GHz)|url = https://ark.intel.com/products/88195/|website=Ark.intel.com|access-date = August 6, 2015}} while supporting up to three monitors connected via HDMI 1.4, DisplayPort 1.2 or Embedded DisplayPort (eDP) interfaces.{{cite web|url=https://www.phoronix.com/scan.php?page=news_item&px=MTc4NDc|title=[Phoronix] Intel Publishes Initial Skylake Linux Graphics Support|website=Phoronix.com|access-date=January 24, 2018}} HDMI 2.0 (4K@60 Hz) is only supported on motherboards equipped with Intel's Alpine Ridge Thunderbolt controller.{{cite web|title = Intel Skylake Z170 Motherboards: A Quick Look at 55+ New Products|url = http://www.anandtech.com/show/9485/intel-skylake-z170-motherboards-asrock-asus-gigabyte-msi-ecs-evga-supermicro|access-date = August 6, 2015|first = Ian|last = Cutress|website=Anandtech.com}}

The Skylake instruction set changes include Intel MPX (Memory Protection Extensions) and Intel SGX (Software Guard Extensions). Future Xeon variants will also have Advanced Vector Extensions 3.2 (AVX-512F).{{cite web|url=http://www.bitsandchips.it/english/52-english-news/5297-avx-512-simd-enabled-only-on-xeon-models-of-skylake|title=AVX-512 SIMD enabled only on Xeon models of SkyLake|work=Bits and Chips|date=February 27, 2015 }}{{cite web|url=http://www.hardware-boom.com/skylake-processors-pc-will-not-support-avx-512|title=Skylake processors for the PC will not support the AVX-512|website=Hardware-boom.com|date=March 3, 2015|access-date=January 24, 2018|archive-date=November 5, 2015|archive-url=https://web.archive.org/web/20151105050218/http://www.hardware-boom.com/skylake-processors-pc-will-not-support-avx-512/|url-status=dead}}

Skylake-based laptops were predicted to use wireless technology called Rezence for charging, and other wireless technologies for communication with peripherals. Many major PC vendors agreed to use this technology in Skylake-based laptops; however, no laptops were released with the technology as of 2019.{{cite web|url=https://www.zdnet.com/article/wire-free-pcs-tablets-and-phones-coming-in-2015-says-intel/|title=Wire-free PCs, tablets and phones coming in 2015 says Intel|date=September 10, 2014|work=ZDNet}}{{cite web|url=https://www.gsmarena.com/counterclockwise_the_wireless_charging_format_wars-news-34143.php|title=Counterclockwise: the wireless charging format wars|date=November 11, 2018|work=GSMArena}}

The integrated GPU of Skylake's S variant supports on Windows DirectX 12 Feature Level 12_1, OpenGL 4.6 with latest Windows 10 driver update{{cite web|url=https://downloadmirror.intel.com/764512/ReleaseNotes_101.2115_WHQL.pdf|title=DRIVER VERSION: 31.0.101.2115 |website=Downloadmirror.intel.com|access-date=December 29, 2022}} (OpenGL 4.5 on Linux{{cite web|url=http://www.phoronix.com/scan.php?page=article&item=mesa-13|title=Mesa 13.0 Released With Intel OpenGL 4.5, RADV Radeon Vulkan Driver|website=Phoronix.com}}) and OpenCL 3.0 standards. The Quick Sync video engine now includes support for VP9 (GPU accelerated decode only), VP8 and HEVC (hardware accelerated 8-bit encode/decode and GPU accelerated 10-bit decode), and supports for resolutions up to 4096{{resx}}2048.{{cite web|url=http://gadgets.ndtv.com/laptops/news/intel-skylake-s-cpus-and-100-series-chipsets-detailed-in-apparent-leak-682437|title=Intel Skylake-S CPUs and 100-series Chipsets Detailed in Apparent Leak|date=April 17, 2015|work= NDTV Gadgets}}{{cite web|title = Skylake's graphics architecture: Intel is still gunning for dedicated GPUs -- IDF15|url = https://arstechnica.com/gadgets/2015/08/skylakes-graphics-architecture-intel-is-still-gunning-for-dedicated-gpus/|access-date = August 18, 2015}}{{cite web |last1=T S |first1=Ganesh |title=Intel's Skylake GPU - Analyzing the Media Capabilities |url=https://www.anandtech.com/show/9562/intels-skylake-gpu-analyzing-the-media-capabilities |website=AnandTech |access-date=6 July 2022 |date=2015-08-26}}

Intel also released unlocked (capable of overclocking) mobile Skylake CPUs.{{cite web|title = Intel Unleashes Next-Gen Enthusiast Desktop PC Platform at Gamescom – Technology@Intel|url = https://blogs.intel.com/technology/2015/08/6th-gen-gamescom/|website = Technology@Intel|date = August 5, 2015|access-date = August 10, 2015}}

Unlike previous generations, Skylake-based Xeon E3 no longer works with a desktop chipset that supports the same socket, and requires either the C232 or the C236 chipset to operate.

Started from Skylake, Intel had removed IDE mode (of SATA controller) and EHCI controller from its client platform chipsets.

Short loops with a specific combination of instruction use may cause unpredictable system behavior on CPUs with hyperthreading. A microcode update was issued to fix the issue.{{cite web|url=https://hothardware.com/news/critical-flaw-in-intel-skylake-and-kaby-lake-hyperthreading-discovered-requiring-bios-microcode-fix|title=[Updated] Critical Flaw In Intel Skylake And Kaby Lake HyperThreading Discovered Requiring BIOS Microcode Fix - HotHardware|website=Hothardware.com|date=June 25, 2017|access-date=January 24, 2018}}

Skylake is vulnerable to Spectre attacks.{{cite web|url=https://lwn.net/Articles/745113/|title=Re: [RFC 09/10] x86/enter: Create macros to restrict/unrestrict Indirect Branch Speculation [LWN.net]|website=Lwn.net|access-date=January 24, 2018}}

In fact, it is more vulnerable than other processors because it uses indirect branch speculation not just on indirect branches but also when the return prediction stack underflows.

The latency for the spinlock {{code|PAUSE}} instruction has been increased dramatically (from the usual 10 cycles to 141 cycles in Skylake), which can cause performance issues with older programs or libraries using pause instructions.{{cite web |title=Why Skylake CPUs Are Sometimes 50% Slower – How Intel Has Broken Existing Code |url=https://aloiskraus.wordpress.com/2018/06/16/why-skylakex-cpus-are-sometimes-50-slower-how-intel-has-broken-existing-code/ |author=Alois Kraus |language=en |date=16 June 2018}} Intel documents the increased latency as a feature that improves power efficiency.{{cite web|url=https://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-optimization-manual.pdf|title=Intel® 64 and IA-32 Architectures Optimization Reference Manual 248966-033|date=June 2016}}

• Improved front-end, deeper out-of-order buffers, improved execution units, more execution units (third vector integer ALU(VALU)) for five ALUs in total, more load/store bandwidth, improved hyper-threading (wider retirement), speedup of AES-GCM and AES-CBC by 17% and 33% accordingly.[https://hubb.blob.core.windows.net/e5888822-986f-45f5-b1d7-08f96e618a7b-published/73ed87d8-209a-4ca1-b456-42a167ffd0bd/SPCS001%20-%20SF15_SPCS001_103f.pdf?sv=2014-02-14&sr=c&sig=yuNEr98jDu9bW8aGCRYrPy8l5CdqbhJeCDRQImSbAyg%3D&se=2015-11-30T21%3A15%3A16Z&sp=rwd] {{dead link|date=January 2018}}{{cite news|url=http://www.maximumpc.com/idf-2015-san-francisco-skylake-deep-dive/|title=Intel talks up new processor releases and celebrates an anniversary|newspaper=Pcgamer|access-date=April 16, 2016}}
• Up to four cores as the default mainstream configuration and up to 18 cores for X-series
• AVX-512: F, CD, VL, BW, and DQ for Xeon Scalable and W variants, but not Xeon E3
• Intel Memory Protection Extensions (MPX)
• Intel Software Guard Extensions (SGX)
• Intel Speed Shift{{cite web|last=Howse|first=Brett|title=Examining Intel's New Speed Shift Tech on Skylake: More Responsive Processors|url=http://www.anandtech.com/show/9751/examining-intel-skylake-speed-shift-more-responsive-processors|access-date=April 16, 2016|website=Anandtech.com}}
• Larger re-order buffer (224 entries, up from 192)
• L1 cache size unchanged at 32 KB instruction and 32 KB data cache per core.
• L2 cache was changed from 8-way to 4-way set associative{{Cite web|title=Skylake (client) - Microarchitectures - Intel - WikiChip|url=https://en.wikichip.org/wiki/intel/microarchitectures/skylake_(client)|access-date=2021-02-08|website=en.wikichip.org|language=en}}
• Voltage regulator module (FIVR) is moved back to the motherboard
• Enhancements of Intel Processor Trace: fine-grained timing through CYC packets (cycle-accurate mode) and support for Instruction Pointer (IP) address filtering.{{Cite web|url=http://halobates.de/blog/p/410|title=Cheat sheet for Intel Processor Trace with Linux perf and GDB at Andi Kleen's blog}}
• 64 to 128 MB L4 eDRAM cache on certain SKUs

• Skylake's integrated Gen9 GPU supports Direct3D 12 at the feature level 12_1{{cite web|date=August 5, 2015|title=Intel Skylake: Core i7-6700K und i5-6600K im Test|url=http://www.pcgameshardware.de/Core-i7-6700K-CPU-260905/Tests/Skylake-Test-Core-i7-6700K-i5-6600K-1166741/#a3|access-date=August 5, 2015|work=PC GAMES HARDWARE ONLINE}}{{cite web|title=Game Dev - Graphics API Developer's Guide For 6th Generation Intel® Core Processors {{!}} Intel® Developer Zone|url=https://software.intel.com/en-us/articles/6th-gen-graphics-api-dev-guide|access-date=April 16, 2016|website=Software.intel.com}}
• Full fixed function HEVC Main/8bit encoding/decoding acceleration. Hybrid/Partial HEVC Main10/10bit decoding acceleration. JPEG encoding acceleration for resolutions up to 16,000×16,000 pixels. Partial VP9 encoding/decoding acceleration.{{cite web|last=Cutress|first=Ian|title=The Intel 6th Gen Skylake Review: Core i7-6700K and i5-6600K Tested|url=http://www.anandtech.com/show/9483/intel-skylake-review-6700k-6600k-ddr4-ddr3-ipc-6th-generation/4|access-date=January 24, 2018|website=Anandtech.com}}

• LGA 1151 socket for mainstream desktop processors and LGA 2066 socket for enthusiast gaming/workstation X-series processors
• 100-series chipset (Sunrise Point){{cite web|date=June 6, 2014|title=Intel's Cannonlake 10nm Microarchitecture is Due For 2016 – Compatible On Union Bay With Union Point PCH|url=http://wccftech.com/intels-cannonlake-10nm-microarchitecture-due-2016-compatible-union-bay-union-point-pch|access-date=June 15, 2014|website=Wccftech.com}}
• X-series uses X299-series chipset
• DMI 3.0 (From DMI 2.0)
• Support for both DDR3L SDRAM and DDR4 SDRAM in mainstream variants, using custom UniDIMM SO-DIMM form factor{{cite web|url=http://wccftech.com/intel-skylake-processors-launch-2h-2015-feature-ddr3-ddr4-memory-support-compatible-lga-1151-socket-z170-chipset|title=Intel Skylake Processors To Launch in 2H 2015 – Compatible With LGA 1151 Socket and Z170 Chipset, Will Feature DDR3 / DDR4 Memory Support|website=Wccftech.com|date=June 4, 2014|access-date=June 9, 2014}}{{cite web|url=http://www.xbitlabs.com/news/memory/display/20120404214706_Intel_to_Start_DDR4_Usage_with_Server_Platforms_in_2014.html|title=Intel to Start DDR4 Usage with Server Platforms in 2014.|first=Anton|last=Shilov|publisher=X-bit laboratories|date=April 4, 2012|access-date=October 5, 2013|url-status=dead|archive-url=https://web.archive.org/web/20131012044133/http://www.xbitlabs.com/news/memory/display/20120404214706_Intel_to_Start_DDR4_Usage_with_Server_Platforms_in_2014.html|archive-date=October 12, 2013|df=mdy-all}}{{cite web|url=http://wccftech.com/intel-skylake-dual-ddr3-ddr4-memory|title=Intel Skylake Could Feature Dual DDR3/DDR4 Memory Support with Double IMCs|date=September 14, 2014|access-date=November 20, 2014|website=Techpowerup.com}} with up to 64 GB of RAM on LGA 1151 variants. Usual DDR3 memory is also supported by certain motherboard vendors even though Intel does not officially support it.{{cite web|title = GIGABYTE – Motherboard – Socket 1151 – GA-Z170-HD3 DDR3 (rev. 1.0)|url = http://www.gigabyte.com/products/product-page.aspx?pid=5488|access-date = September 7, 2015}}{{cite web|title = Skylake's IMC Supports Only DDR3L| date=September 28, 2015 |url = http://www.tomshardware.com/news/skylake-memory-support,30185.html|access-date = September 29, 2015}}
• Support for 16 PCI Express 3.0 lanes from CPU, 20 PCI Express 3.0 lanes from PCH (LGA 1151), 44 PCI Express 3.0 lanes for Skylake-X
• Support for Thunderbolt 3 (Alpine Ridge){{cite web|last=Kirsch |first=Nathan |url=http://www.legitreviews.com/intel-2015-platform-roadmap-shows-skylake-cpus-100-series-chipset-and-ddr4_141247 |title=Intel 2015 Platform Roadmap Shows Skylake CPUs, 100 Series Chipset and DDR4 |date=May 5, 2014 |publisher=Legit Reviews |access-date=May 8, 2014}}

• Thermal design power (TDP) up to 95 W (LGA 1151); up to 165 W (LGA 2066){{cite web|url=http://wccftech.com/intel-10nm-skylake-desktop-platform-arrives-2015-tdps-dt-hseries-useries-yseries-unveiled-quad-core-gt4e-gpu-95w-tdp|title=Intel 14nm Skylake Desktop 'Sky Bay Platform Detailed – TDPs For DT, H-Series, U-Series, Y-Series Unveiled, Quad Core With GT4e GPU Has 95W TDP|website=Wccftech.com|date=June 5, 2014|access-date=June 9, 2014}}
• 14 nm manufacturing process{{cite web|title = 6th Generation Intel® Core Processor Family Datasheet, Vol. 1|url = http://www.intel.com/content/www/us/en/processors/core/desktop-6th-gen-core-family-datasheet-vol-1.html|website = Intel|access-date = August 22, 2015}}

Skylake processors are produced in seven main families: Y, U, H, S, X, W, and SP. Multiple configurations are available within each family:

File:Intel@14nm@Skylake@Skylake-S@Core i7-6700@SR2BT Stack-DSC02973-DSC03021 - ZS-retouched (30035867736).jpg

Common features of the mainstream desktop Skylake CPUs:

• DMI 3.0 and PCIe 3.0 interfaces
• Dual-channel memory support in the following configurations: DDR3L-1600 1.35 V (32 GB maximum) or DDR4-2133 1.2 V (64 GB maximum). DDR3 is unofficially supported through some motherboard vendors{{cite web|title = GIGABYTE – Motherboard – Socket 1151 – GA-Z170-HD3 DDR3 (rev. 1.0)|url = http://www.gigabyte.com/products/product-page.aspx?pid=5488|website=Gigabyte.com|access-date = November 2, 2015}}{{cite web |title=Z170-P D3 – Overview |url=https://www.asus.com/Motherboards/Z170-P-D3/ |website=Asus |access-date=November 2, 2015}}{{cite web |title=Z170 Pro4/D3 |url=http://www.asrock.com/mb/Intel/Z170%20Pro4D3/ |website=ASRock |access-date=November 2, 2015}}
• 16 PCIe 3.0 lanes
• The Core-branded processors support the AVX2 instruction set. The Celeron and Pentium-branded ones support only SSE4.1/4.2
• 350 MHz base graphics clock rate

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Common features of the high-performance Skylake-X CPUs:

• In addition to the AVX2 instruction set, they also support the AVX-512 instructions
• No built-in iGPU (integrated graphics processor)
• Turbo Boost Max Technology 3.0 for up to two/four threads workloads for CPUs that have eight cores and more (7820X, 7900X, 7920X, 7940X, 7960X, 7980XE, and all ninth generation chips){{Cite web |title=Intel Core X Series Processor Overview |url=https://newsroom.intel.com/newsroom/wp-content/uploads/sites/11/2017/08/intel-core-x-series-processor-overview.pdf |website=Intel Newsroom |language=en-US |access-date=January 24, 2018}}
• A different cache hierarchy (when compared to client Skylake CPUs or previous architectures)

File:Intel@14nm@@Skylake@Skylake-X(LCC)@i7-7820X@SR3L5 Stack-DSC09155-DSC09210 - ZS-retouched (28088639909).jpg

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• Marketed as a Xeon
• Uses the C621 chipset
• Xeon W-3175X was the only Xeon with a multiplier officially unlocked for overclocking until the introduction of Sapphire Rapids-WS Xeon CPUs in 2023.{{cite news |author1=Paul Alcorn |title=Intel Launches Overclockable Xeon W CPUs up to 56 Cores: a Return to HEDT-Class Chips |url=https://www.tomshardware.com/news/intel-xeon-w-3400-w-2400-cpu-launch-hedt-overclock |access-date=16 February 2023 |work=Tom's Hardware |date=15 February 2023 |language=en}}

{{cpulist|lake-e|head}}

{{cpulist|lake-e|skylake_e|model=Xeon W-3175X |ark=189452|sspec1=SRF6L|step1=H0|cores=28|threads=56|l3=38.50|mult=31|turbo=3.8/4.3 GHz|tdp=255|mem=6 × DDR4-2666|date=January 30, 2019||sock=3647|part1=CD8067304237800|part2=BX80673W3175X|price=$2999}}

{{end}}

For mobile workstation processors, see Server processors

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• All models support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, FMA3, MPX, Enhanced Intel SpeedStep Technology (EIST), Intel 64, XD bit (an NX bit implementation), Intel VT-x, Intel VT-d, Turbo Boost (excluding W-2102 and W-2104), Hyper-threading (excluding W-2102 and W-2104), AES-NI, Intel TSX-NI, Smart Cache.
• PCI Express lanes: 48
• Supports up to eight DIMMs of DDR4 memory, maximum 512 GB.

{{cpulist|lake-e|head}}

{{cpulist|lake-e|skylake_e|model=Xeon W-2195 |ark=126793|sspec1=SR3RX|step1=M0|cores=18|threads=36|l3=24.75|mult=23|turbo=3.2/4.3 GHz|tdp=140|mem=4 × DDR4-2666|date=August 29, 2017||sock=2066|part1=CD8067303805901|part2=|price=$2553}}

{{cpulist|lake-e|skylake_e|model=Xeon W-2191B|ark= |sspec1=SR3RW|step1=H0|cores=18|threads=36|l3=24.75|mult=23|turbo=3.2/4.3 GHz|tdp=140|mem=4 × DDR4-2666|date=December 21, 2017||sock=2066|part1= |part2=|price=OEM for Apple}}

{{cpulist|lake-e|skylake_e|model=Xeon W-2175 |ark=130046|sspec1=SR3W2|step1=M0|cores=14|threads=28|l3=19.25|mult=25|turbo=3.3/4.3 GHz|tdp=140|mem=4 × DDR4-2666|date=October 15, 2017||sock=2066|part1=CD8067303842300|part2=|price=$1947}}

{{cpulist|lake-e|skylake_e|model=Xeon W-2170B|ark= |sspec1=SR3W3|step1=H0|cores=14|threads=28|l3=19.25|mult=25|turbo=3.3/4.3 GHz|tdp=140|mem=4 × DDR4-2666|date=December 21, 2017||sock=2066|part1= |part2=|price=OEM for Apple}}

{{cpulist|lake-e|skylake_e|model=Xeon W-2155 |ark=125042|sspec1=SR3LR|step1=U0|cores=10|threads=20|l3=13.75|mult=33|turbo=4.0/4.5 GHz|tdp=140|mem=4 × DDR4-2666|date=August 29, 2017||sock=2066|part1=CD8067303533703|part2=|price=$1440}}

{{cpulist|lake-e|skylake_e|model=Xeon W-2150B|ark= |sspec1=SR3LS|step1=H0|cores=10|threads=20|l3=13.75|mult=30|turbo=4.0/4.5 GHz|tdp=120|mem=4 × DDR4-2666|date=December 21, 2017||sock=2066|part1= |part2=|price=OEM for Apple}}

{{cpulist|lake-e|skylake_e|model=Xeon W-2145 |ark=126707|sspec1=SR3LQ|step1=U0|cores= 8|threads=16|l3=11.00|mult=37|turbo=4.3/4.5 GHz|tdp=140|mem=4 × DDR4-2666|date=August 29, 2017||sock=2066|part1=CD8067303533601|part2=|price=$1113}}

{{cpulist|lake-e|skylake_e|model=Xeon W-2140B|ark= |sspec1=SR3LK|step1=H0|cores= 8|threads=16|l3=11.00|mult=32|turbo=3.9/4.2 GHz|tdp=120|mem=4 × DDR4-2666|date=December 21, 2017||sock=2066|part1= |part2=|price=OEM for Apple{{cite web |title=The Intel Xeon W Review: W-2195, W-2155, W-2123, W-2104 and W-2102 Tested |url=https://www.anandtech.com/show/13116/the-intel-xeon-w-review-w-2195-w-2155-w-2123-w-2104-and-w-2102-tested |website=www.anandtech.com |access-date=4 May 2019}}{{cite web |title=Apple's iMac Pro Xeon W are ready |url=https://fuse.wikichip.org/news/675/apples-imac-pro-xeon-w-are-ready/ |website=WikiChip Fuse |access-date=4 May 2019 |date=24 December 2017}}}}

{{cpulist|lake-e|skylake_e|model=Xeon W-2135 |ark=126709|sspec1=SR3LN|step1=U0|cores= 6|threads=12|l3= 8.25|mult=37|turbo=4.4/4.5 GHz|tdp=140|mem=4 × DDR4-2666|date=August 29, 2017||sock=2066|part1=CD8067303533403|part2=|price=$835}}

{{cpulist|lake-e|skylake_e|model=Xeon W-2133 |ark=125040|sspec1=SR3LL|step1=U0|cores= 6|threads=12|l3= 8.25|mult=36|turbo=3.8/3.9 GHz|tdp=140|mem=4 × DDR4-2666|date=August 29, 2017||sock=2066|part1=CD8067303533204|part2=|price=$617}}

{{cpulist|lake-e|skylake_e|model=Xeon W-2125 |ark=126708|sspec1=SR3LM|step1=U0|cores= 4|threads=8 |l3= 8.25|mult=40|turbo=4.4/4.5 GHz|tdp=120|mem=4 × DDR4-2666|date=August 29, 2017||sock=2066|part1=CD8067303533303|part2=|price=$444}}

{{cpulist|lake-e|skylake_e|model=Xeon W-2123 |ark=125036|sspec1=SR3LJ|step1=U0|cores= 4|threads=8 |l3= 8.25|mult=36|turbo=3.7/3.9 GHz|tdp=120|mem=4 × DDR4-2666|date=August 29, 2017||sock=2066|part1=CD8067303533002|part2=|price=$294}}

{{cpulist|lake-e|skylake_e|model=Xeon W-2104 |ark=125039|sspec1=SR3LH|step1=U0|cores= 4|threads=4 |l3= 8.25|mult=32|turbo=N/A |tdp=120|mem=4 × DDR4-2400|date=August 29, 2017||sock=2066|part1=CD8067303532903|part2=|price=$255}}

{{cpulist|lake-e|skylake_e|model=Xeon W-2102 |ark=125038|sspec1=SR3LG|step1=U0|cores= 4|threads=4 |l3= 8.25|mult=29|turbo=N/A |tdp=120|mem=4 × DDR4-2400|date=August 29, 2017||sock=2066|part1=CD8067303532802|part2=|price=$202}}

{{end}}

E3 series server chips all consist of System Bus 9 GT/s, maximum memory bandwidth of 34.1 GB/s dual channel memory. Unlike its predecessor, the Skylake Xeon CPUs require C230 series (C232/C236) or C240 series (C242/C246) chipset to operate, with integrated graphics working only with C236 and C246 chipsets. Mobile counterparts uses CM230 and CM240 series chipsets.

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• Xeon Platinum supports up to eight sockets. Xeon Gold supports up to four sockets. Xeon Silver and Bronze support up to two sockets.
• −M: 1536 GB RAM per socket instead of 768 GB RAM for non−M SKUs
• −F: integrated OmniPath fabric
• −T: High thermal-case and extended reliability
• Support for up to 12 DIMMs of DDR4 memory per CPU socket.
• Xeon Platinum, Gold 61XX, and Gold 5122 have two AVX-512 FMA units per core. Xeon Gold 51XX (except 5122), Silver, and Bronze have a single AVX-512 FMA unit per core.

• Xeon Bronze 31XX has no HT or Turbo Boost support.
• Xeon Bronze 31XX supports DDR4-2133 MHz RAM. Xeon Silver 41XX supports DDR4-2400 MHz RAM.
• Xeon Bronze 31XX and Xeon Silver 41XX support two UPI links at 9.6 GT/s.

{{cpulist|lake-e|head}}

{{cpulist|lake-e|skylake_e|model=Xeon Silver 4116 |ark=120481|sspec1=SR3HQ|step1=M0|cores=12|threads=24|l3=16.50|mult=21|turbo=2.4/3.0 GHz|upi=2 × 9.6|tdp=85|mem=6 × DDR4-2400|date=11 July 2017||sock=3647|part2=BX806734116|part1=CD8067303567200|price=$1002
$1012}}

{{cpulist|lake-e|skylake_e|model=Xeon Silver 4116T|ark=126155|sspec1=SR3MQ|step1=M0|cores=12|threads=24|l3=16.50|mult=21|turbo=2.4/3.0 GHz|upi=2 × 9.6|tdp=85|mem=6 × DDR4-2400|date=Q3 2017||sock=3647|part1=CD8067303645400|price= $1112}}

{{cpulist|lake-e|skylake_e|model=Xeon Silver 4114 |ark=123550|sspec1=SR3GK|step1=U0|cores=10|threads=20|l3=13.75|mult=22|turbo=2.5/3.0 GHz|upi=2 × 9.6|tdp=85|mem=6 × DDR4-2400|date=11 July 2017||sock=3647|part2=BX806734114|part1=CD8067303561800|price=$694
$704}}

{{cpulist|lake-e|skylake_e|model=Xeon Silver 4114T|ark=126153|sspec1=SR3MM|step1=U0|cores=10|threads=20|l3=13.75|mult=22|turbo=2.5/3.0 GHz|upi=2 × 9.6|tdp=85|mem=6 × DDR4-2400|date=Q3 2017||sock=3647|part1=CD8067303645300|price=$773}}

{{cpulist|lake-e|skylake_e|model=Xeon Silver 4112 |ark=123551|sspec1=SR3GN|step1=U0|cores= 4|threads= 8|l3= 8.25|mult=26|turbo=2.9/3.0 GHz|upi=2 × 9.6|tdp=85|mem=6 × DDR4-2400|date=11 July 2017||sock=3647|part2=BX806734112|part1=CD8067303562100|price=$473
$483}}

{{cpulist|lake-e|skylake_e|model=Xeon Silver 4110 |ark=123547|sspec1=SR3GH|step1=U0|cores= 8|threads=16|l3=11.00|mult=21|turbo=2.4/3.0 GHz|upi=2 × 9.6|tdp=85|mem=6 × DDR4-2400|date=11 July 2017||sock=3647|part2=BX806734110|part1=CD8067303561400|price=$501
$511}}

{{cpulist|lake-e|skylake_e|model=Xeon Silver 4109T|ark=123549|sspec1=SR3GP|step1=U0|cores= 8|threads=16|l3=11.00|mult=20|turbo=2.3/3.0 GHz|upi=2 × 9.6|tdp=70|mem=6 × DDR4-2400|date=11 July 2017||sock=3647|part1=CD8067303562200|price=$501}}

{{cpulist|lake-e|skylake_e|model=Xeon Silver 4108 |ark=123544|sspec1=SR3GJ|step1=U0|cores= 8|threads=16|l3=11.00|mult=18|turbo=2.1/3.0 GHz|upi=2 × 9.6|tdp=85|mem=6 × DDR4-2400|date=11 July 2017||sock=3647|part2=BX806734108|part1=CD8067303561500|price=$417
$427}}

{{cpulist|lake-e|skylake_e|model=Xeon Bronze 3106 |ark=123540|sspec1=SR3GL|step1=U0|cores= 8|threads=8 |l3=11.00|mult=17|turbo=N/A|upi=2 × 9.6|tdp=85|mem=6 × DDR4-2133|date=11 July 2017||sock=3647|part2=BX806733106|part1=CD8067303561900|price=$306
$316}}

{{cpulist|lake-e|skylake_e|model=Xeon Bronze 3104 |ark=123546|sspec1=SR3GM|step1=U0|cores= 6|threads=6 |l3= 8.25|mult=17|turbo=N/A|upi=2 × 9.6|tdp=85|mem=6 × DDR4-2133|date=11 July 2017||sock=3647|part2=BX806733104|part1=CD8067303562000|price=$223
$213}}

{{end}}

• Xeon Gold 51XX and F SKUs has two UPIs at 10.4 GT/s. Xeon Gold 61XX has three UPIs at 10.4 GT/s.
• Xeon Gold 51XX support DDR4-2400 MHz RAM (except 5122). Xeon Gold 5122 and 61XX support DDR4-2666 MHz RAM.

{{cpulist|lake-e|head}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6161 |ark= |sspec1=SR3G7|step1=H0|cores=22|threads=44|l3=30.25|mult=22|turbo=2.7/3.0GHz|upi=3 × 10.4|tdp=165|mem=6 × DDR4-2666|date=2017||sock=3647|part1=CD8067303532100|price=}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6154 |ark=120495|sspec1=SR3J5|step1=H0|cores=18|threads=36|l3=24.75|mult=30|turbo=3.7/3.7GHz|upi=3 × 10.4|tdp=200|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303592700|price=$3543}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6152 |ark=120491|sspec1=SR3B4|step1=H0|cores=22|threads=44|l3=30.25|mult=21|turbo=2.8/3.7GHz|upi=3 × 10.4|tdp=140|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part2=BX806736152|part1=CD8067303406000|price=$3655
$3661}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6150 |ark=120490|sspec1=SR37K|step1=H0|cores=18|threads=36|l3=24.75|mult=27|turbo=3.4/3.7GHz|upi=3 × 10.4|tdp=165|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303328000|price=$3358}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6149 |ark= |sspec1= |step1=H0|cores=16|threads=32|l3= |mult=31|turbo= |upi=3 × 10.4|tdp= |mem=6 × DDR4-2666|date=||sock=3647|part1=|price=OEM}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6148 |ark=120489|sspec1=SR3B6|step1=H0|cores=20|threads=40|l3=27.50|mult=24|turbo=3.1/3.7GHz|upi=3 × 10.4|tdp=150|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part2=BX806736148|part1=CD8067303406200|price=$3072
$3078}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6148F|ark=123690|sspec1=SR3KJ|step1=H0|cores=20|threads=40|l3=27.50|mult=24|turbo=3.1/3.7GHz|upi=2 × 10.4|tdp=150|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303593800|price=$3227}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6146 |ark=124942|sspec1=SR3MA|step1=H0|cores=12|threads=24|l3=24.75|mult=32|turbo=3.9/4.2GHz|upi=3 × 10.4|tdp=165|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303657201|price=$3286}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6145 |ark= |sspec1=SR3G4|step1=H0|cores=20|threads=40|l3=27.50|mult=20|turbo=2.7/3.7GHz|upi=3 × 10.4|tdp=145|mem=6 × DDR4-2666|date=2017||sock=3647|part1=CD8067303528200|price=}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6144 |ark=124943|sspec1=SR3MB|step1=H0|cores=8 |threads=16|l3=24.75|mult=35|turbo=4.1/4.2GHz|upi=3 × 10.4|tdp=150|mem=6 × DDR4-2666|date=Q3 2017||sock=3647|part1=CD8067303657302|price=$2925}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6142M|ark=120488|sspec1=SR3B1|step1=H0|cores=16|threads=32|l3=22.00|mult=26|turbo=3.3/3.7GHz|upi=3 × 10.4|tdp=150|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303405700|price=$5949}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6142F|ark=123685|sspec1=SR3KH|step1=H0|cores=16|threads=32|l3=22.00|mult=26|turbo=3.3/3.7GHz|upi=2 × 10.4|tdp=160|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303593700|price=$3101}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6142 |ark=120487|sspec1=SR3AY|step1=H0|cores=16|threads=32|l3=22.00|mult=26|turbo=3.3/3.7GHz|upi=3 × 10.4|tdp=150|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part2=BX806736142|part1=CD8067303405400|price=$2946
$2952}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6140 |ark=120485|sspec1=SR3AX|step1=H0|cores=18|threads=36|l3=24.75|mult=23|turbo=3.0/3.7GHz|upi=3 × 10.4|tdp=140|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part2=BX806736140|part1=CD8067303405200|price=$2445
$2451}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6140M|ark=120486|sspec1=SR3AZ|step1=H0|cores=18|threads=36|l3=24.75|mult=23|turbo=3.0/3.7GHz|upi=3 × 10.4|tdp=140|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303405500|price=$5448}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6138 |ark=120476|sspec1=SR3B5|step1=H0|cores=20|threads=40|l3=27.50|mult=20|turbo=2.7/3.7GHz|upi=3 × 10.4|tdp=125|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part2=BX806736138|part1=CD8067303406100|price=$2612
$2618}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6138F|ark=123686|sspec1=SR3KK|step1=H0|cores=20|threads=40|l3=27.50|mult=20|turbo=2.7/3.7GHz|upi=2 × 10.4|tdp=135|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303593900|price=$2767}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6138T|ark=123542|sspec1=SR3J7|step1=H0|cores=20|threads=40|l3=27.50|mult=20|turbo=2.7/3.7GHz|upi=3 × 10.4|tdp=125|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303592900|price=$2742}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6136 |ark=120479|sspec1=SR3B2|step1=H0|cores=12|threads=24|l3=24.75|mult=30|turbo=3.6/3.7GHz|upi=3 × 10.4|tdp=150|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303405800|price=$2460}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6134 |ark=120493|sspec1=SR3AR|step1=H0|cores= 8|threads=16|l3=24.75|mult=32|turbo=3.7/3.7GHz|upi=3 × 10.4|tdp=130|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part2=BX806736134|part1=CD8067303330302|price=$2214
$2220}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6134M|ark=120494|sspec1=SR3AS|step1=H0|cores= 8|threads=16|l3=24.75|mult=32|turbo=3.7/3.7GHz|upi=3 × 10.4|tdp=130|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303330402|price=$5217}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6132 |ark=123541|sspec1=SR3J3|step1=H0|cores=14|threads=28|l3=19.25|mult=26|turbo=3.3/3.7GHz|upi=3 × 10.4|tdp=140|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303592500|price=$2111}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6130 |ark=120492|sspec1=SR3B9|step1=H0|cores=16|threads=32|l3=22.00|mult=21|turbo=2.8/3.7GHz|upi=3 × 10.4|tdp=125|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part2=BX806736130|part1=CD8067303409000|price=$1900}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6130F|ark=123688|sspec1=SR3KD|step1=H0|cores=16|threads=32|l3=22.00|mult=21|turbo=2.8/3.7GHz|upi=2 × 10.4|tdp=125|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303593300|price=$2049}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6130T|ark=123545|sspec1=SR3J8|step1=H0|cores=16|threads=32|l3=22.00|mult=21|turbo=2.8/3.7GHz|upi=3 × 10.4|tdp=125|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303593000|price=$1988}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6128 |ark=120482|sspec1=SR3J4|step1=H0|cores= 6|threads=12|l3=19.25|mult=34|turbo=3.7/3.7GHz|upi=3 × 10.4|tdp=115|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part2=BX806736128|part1=CD8067303592600|price=$1691
$1697}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6126 |ark=120483|sspec1=SR3B3|step1=H0|cores=12|threads=24|l3=19.25|mult=26|turbo=3.3/3.7GHz|upi=3 × 10.4|tdp=125|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303405900|price=$1776}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6126F|ark=123689|sspec1=SR3KE|step1=H0|cores=12|threads=24|l3=19.25|mult=26|turbo=3.3/3.7GHz|upi=2 × 10.4|tdp=135|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303593400|price=$1931}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 6126T|ark=123548|sspec1=SR3J9|step1=H0|cores=12|threads=24|l3=19.25|mult=26|turbo=3.3/3.7GHz|upi=3 × 10.4|tdp=125|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303593100|price=$1865}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 5122 |ark=120475|sspec1=SR3AT|step1=H0|cores= 4|threads= 8|l3=16.50|mult=36|turbo=3.7/3.7GHz|upi=2 × 10.4|tdp=105|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part2=BX806735122|part1=CD8067303330702|price=$1221
$1227}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 5120 |ark=120474|sspec1=SR3GD|step1=M0|cores=14|threads=28|l3=19.25|mult=22|turbo=2.6/3.2GHz|upi=2 × 10.4|tdp=105|mem=6 × DDR4-2400|date=11 July 2017||sock=3647|part2=BX806735120|part1=CD8067303535900|price=$1555
$1561}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 5120T|ark=120477|sspec1=SR3GC|step1=M0|cores=14|threads=28|l3=19.25|mult=22|turbo=2.6/3.2GHz|upi=2 × 10.4|tdp=105|mem=6 × DDR4-2400|date=11 July 2017||sock=3647|part1=CD8067303535700|price=$1727}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 5119T|ark=126154|sspec1=SR3MN|step1=M0|cores=14|threads=28|l3=19.25|mult=19|turbo=2.3/3.2GHz|upi=2 × 10.4|tdp=85 |mem=6 × DDR4-2400|date=11 July 2017||sock=3647|part1=CD8067303567703|price=$1555}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 5118 |ark=120473|sspec1=SR3GF|step1=M0|cores=12|threads=24|l3=16.50|mult=23|turbo=2.7/3.2GHz|upi=2 × 10.4|tdp=105|mem=6 × DDR4-2400|date=11 July 2017||sock=3647|part1=CD8067303536100|price=$1273}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 5117 |ark=122460|sspec1=SR37S |step1=M0|cores=14|threads=28|l3=19.25|mult=20|turbo=2.3/2.8GHz|upi=2 × 10.4|tdp=105|mem=6 × DDR4-2400|date=11 July 2017||sock=3647|part1=CD8067303317801|price=$1286}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 5117F|ark=124944|sspec1=SR3KM |step1=M0|cores=14|threads=28|l3=19.25|mult=20|turbo=2.3/2.8GHz|upi=2 × 10.4|tdp=113|mem=6 × DDR4-2400|date=11 July 2017||sock=3647|part1=CD8067303680501|price=}}

{{cpulist|lake-e|skylake_e|model=Xeon Gold 5115 |ark=120484|sspec1=SR3GB|step1=M0|cores=10|threads=20|l3=13.75|mult=24|turbo=2.8/3.2GHz|upi=2 × 10.4|tdp=85 |mem=6 × DDR4-2400|date=11 July 2017||sock=3647|part1=CD8067303535601|price=$1221}}

{{end}}

File:Intel@14nm@Skylake@Skylake-SP(XCC)@Xeon(ES)@QJW5 DSCx1.jpg|Intel Skylake Xeon gold processor

File:Intel@14nm@Skylake@Skylake-SP(XCC)@Xeon(ES)@QJW5 DSCx3.jpg|Intel Skylake Xeon gold processor, delidded

File:Intel@14nm@Skylake@Skylake-SP(XCC)@Xeon(ES)@QJW5 DSCx10@5x.jpg|Die shot

• Xeon Platinum non-F SKUs have three UPIs at 10.4 GT/s. Xeon Platinum F-SKUs have two UPIs at 10.4 GT/s.
• Xeon Platinum supports DDR4-2666 MHz RAM.

{{cpulist|lake-e|head}}

{{cpulist|lake-e|skylake_e|model=Xeon Platinum 8180 |ark=120496|sspec1=SR377|step1=H0|cores=28|threads=56|l3=38.50|mult=25|turbo=3.2/3.8 GHz|upi=3 × 10.4|tdp=205|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303314400|price=$10,009}}

{{cpulist|lake-e|skylake_e|model=Xeon Platinum 8180M|ark=120498|sspec1=SR37T|step1=H0|cores=28|threads=56|l3=38.50|mult=25|turbo=3.2/3.8 GHz|upi=3 × 10.4|tdp=205|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303192101|price=$13,011}}

{{cpulist|lake-e|skylake_e|model=Xeon Platinum 8176 |ark=120508|sspec1=SR37A|step1=H0|cores=28|threads=56|l3=38.50|mult=21|turbo=2.8/3.8 GHz|upi=3 × 10.4|tdp=165|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303314700|price=$8790}}

{{cpulist|lake-e|skylake_e|model=Xeon Platinum 8176F|ark=125056|sspec1=SR3MK|step1=H0|cores=28|threads=56|l3=38.50|mult=21|turbo=2.8/3.8 GHz|upi=2 × 10.4|tdp=173|mem=6 × DDR4-2666|date=Q3, 2017||sock=3647|part1=CD8067303694600|price=$8874}}

{{cpulist|lake-e|skylake_e|model=Xeon Platinum 8176M|ark=120505|sspec1=SR37U|step1=H0|cores=28|threads=56|l3=38.50|mult=21|turbo=2.8/3.8 GHz|upi=3 × 10.4|tdp=165|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303133605|price=$11,722}}

{{cpulist|lake-e|skylake_e|model=Xeon Platinum 8173M|ark= |sspec1=SR37Q|step1=H0|cores=28|threads=56|l3=38.50|mult=20|turbo=2.7/3.5 GHz|upi=3 × 10.4|tdp=165|mem=6 × DDR4-2666|date=2017||sock=3647|part1=CD8067303172400|price=}}

{{cpulist|lake-e|skylake_e|model=Xeon Platinum 8170 |ark=120506|sspec1=SR37H|step1=H0|cores=26|threads=52|l3=35.75|mult=21|turbo=2.8/3.7 GHz|upi=3 × 10.4|tdp=165|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part2=BX806738170|part1=CD8067303327601|price=$7405
$7411}}

{{cpulist|lake-e|skylake_e|model=Xeon Platinum 8170M|ark=120507|sspec1=SR3BD|step1=H0|cores=26|threads=52|l3=35.75|mult=21|turbo=2.8/3.7 GHz|upi=3 × 10.4|tdp=165|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303319201|price=$10,409}}

{{cpulist|lake-e|skylake_e|model=Xeon Platinum 8168 |ark=120504|sspec1=SR37J|step1=H0|cores=24|threads=48|l3=33.00|mult=27|turbo=3.4/3.7 GHz|upi=3 × 10.4|tdp=205|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303327701|price=$5890}}

{{cpulist|lake-e|skylake_e|model=Xeon Platinum 8167M|ark= |sspec1=SR3A0|step1=H0|cores=26|threads=52|l3=35.75|mult=20|turbo=2.4/2.4 GHz|upi=3 × 10.4|tdp=165|mem=6 × DDR4-2666|date=2017||sock=3647|part1=CD8067303180701|price=}}

{{cpulist|lake-e|skylake_e|model=Xeon Platinum 8164 |ark=120503|sspec1=SR3BB|step1=H0|cores=26|threads=52|l3=35.75|mult=20|turbo=2.7/3.7 GHz|upi=3 × 10.4|tdp=150|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part2=BX806738164|part1=CD8067303408800|price=$6114
$6120}}

{{cpulist|lake-e|skylake_e|model=Xeon Platinum 8163 |ark= |sspec1=SR3G1|step1=H0|cores=24|threads=48|l3=33.00|mult=24|turbo=2.7/3.1 GHz|upi=3 × 10.4|tdp=165|mem=6 × DDR4-2666|date=2017||sock=3647|part1=CD8067303527200|price=}}

{{cpulist|lake-e|skylake_e|model=Xeon Platinum 8160 |ark=120501|sspec1=SR3B0|step1=H0|cores=24|threads=48|l3=33.00|mult=21|turbo=2.8/3.7 GHz|upi=3 × 10.4|tdp=150|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part2=BX806738160|part1=CD8067303405600|price=$4702
$4708}}

{{cpulist|lake-e|skylake_e|model=Xeon Platinum 8160F|ark=123687|sspec1=SR3B8|step1=H0|cores=24|threads=48|l3=33.00|mult=21|turbo=2.8/3.7 GHz|upi=2 × 10.4|tdp=160|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303406600|price=$4856}}

{{cpulist|lake-e|skylake_e|model=Xeon Platinum 8160M|ark=120502|sspec1=SR3B8|step1=H0|cores=24|threads=48|l3=33.00|mult=21|turbo=2.8/3.7 GHz|upi=3 × 10.4|tdp=150|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303406600|price=$7704}}

{{cpulist|lake-e|skylake_e|model=Xeon Platinum 8160T|ark=123543|sspec1=SR3J6|step1=H0|cores=24|threads=48|l3=33.00|mult=21|turbo=2.8/3.7 GHz|upi=3 × 10.4|tdp=150|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303592800|price=$4936}}

{{cpulist|lake-e|skylake_e|model=Xeon Platinum 8158 |ark=120500|sspec1=SR3B7|step1=H0|cores=12|threads=24|l3=24.75|mult=30|turbo=2.7/3.7 GHz|upi=3 × 10.4|tdp=150|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303406500|price=$7007}}

{{cpulist|lake-e|skylake_e|model=Xeon Platinum 8156 |ark=120499|sspec1=SR3AV|step1=H0|cores= 4|threads= 8|l3=16.50|mult=36|turbo=3.3/3.7 GHz|upi=3 × 10.4|tdp=105|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303368800|price=$7007}}

{{cpulist|lake-e|skylake_e|model=Xeon Platinum 8153 |ark=120497|sspec1=SR3BA|step1=H0|cores=16|threads=32|l3=22.00|mult=20|turbo=2.3/2.8 GHz|upi=3 × 10.4|tdp=125|mem=6 × DDR4-2666|date=11 July 2017||sock=3647|part1=CD8067303408900|price=$3115|links=1}}

{{end}}

• List of Intel CPU microarchitectures

{{Reflist}}

• {{cite web|title=Intel Skylake CPU details revealed: These faster, more power-efficient chips can even drive three 4K monitors|url=http://www.pcworld.com/article/2972823/components-processors/intel-skylake-laptop-cpus-should-use-less-power-run-faster-and-can-even-drive-three-4k-monitors.html|date=August 18, 2015|first=Gordon|last=Ung|publisher=PC world}}
• {{cite web|title=Intel's Skylake a New Lifeline for the PC Market?|url=https://finance.yahoo.com/news/intel-skylake-lifeline-pc-market-110531240.html|publisher=Yahoo Finance|last=Shields|first=Anne|date=September 19, 2015}}
• {{cite web|title=Graphics Driver Support Update for 10th Generation and Older Intel Processor Graphics|url=https://www.intel.com/content/www/us/en/support/articles/000091662/graphics.html|publisher=Intel Support|date=December 30, 2022}}

{{Intel processors|skylake}}

{{IntelProcessorRoadmap}}

Skylake microarchitecture

Category:Intel microarchitectures

Category:Transactional memory

Category:X86 microarchitectures

Category:Computer-related introductions in 2015