Zen+

File: Ryzen 5-2600.jpg

File:AMD Ryzen 5 2600 (39851733273).jpg

Zen+ uses GlobalFoundries' 12 nm fabrication process,{{Cite news|url=https://www.extremetech.com/computing/256213-amd-will-use-new-globalfoundries-12nm-node-future-cpus-gpus|title=AMD Will Use 'New' GlobalFoundries 12nm Node for Future CPUs, GPUs|date=2017-09-22|work=ExtremeTech|access-date=2018-02-04|language=en-US}} an optimization of the 14 nm process used for Zen, with only minor design rule changes.{{cite news|url=https://www.anandtech.com/show/12625/amd-second-generation-ryzen-7-2700x-2700-ryzen-5-2600x-2600|title=The AMD 2nd Gen Ryzen Deep Dive: The 2700X, 2700, 2600X, and 2600 Tested|last1=Cutress|first1=Ian|date=19 April 2018|access-date=Nov 30, 2018|publisher=Anandtech}} This means that the die sizes between Zen and Zen+ are identical as AMD chose to use the new smaller transistors to increase the amount of empty space, or "dark silicon", between the various features on the die. This was done to improve power efficiency & reduce thermal density to allow for higher clock speeds, rather than design an entirely new floorplan for a physically smaller die (which would have been significantly more work and thus more expensive).{{cite news|last1=Cutress|first1=Ian|title=The AMD 2nd Gen Ryzen Deep Dive: The 2700X, 2700, 2600X, and 2600 Tested|url=https://www.anandtech.com/show/12625/amd-second-generation-ryzen-7-2700x-2700-ryzen-5-2600x-2600/2|access-date=18 July 2020|publisher=Anandtech|date=19 April 2018}} These process optimizations allowed 12 nm Zen+ to clock about +250 MHz (≈6%) higher, or to lower power consumption when at the same frequency by 10%, when compared to their prior 14 nm Zen products.{{cite news|last1=Kampman|first1=Jeff|title=AMD lays out its Ryzen and Radeon plans for 2018 and beyond at CES|url=https://techreport.com/review/33046/amd-lays-out-its-ryzen-and-radeon-plans-for-2018-and-beyond-at-ces/|access-date=8 January 2018|publisher=Tech Report|date=8 January 2018}} Although conversely at the microarchitecture level, Zen+ had only minor revisions versus Zen. Known changes to the microarchitecture include improved clock speed regulation in response to workload ("Precision Boost 2"),{{cite news|last1=Leather|first1=Anthony|title=AMD Confirms New Zen+ Ryzen CPUs For April 2018: X470 Chipset, Threadripper And APUs Inbound Too|url=https://www.forbes.com/sites/antonyleather/2018/01/07/amd-confirms-new-zen-ryzen-cpus-for-april-2018-x470-chipset-threadripper-and-apus-inbound-too|access-date=9 January 2018|work=Forbes|date=7 January 2018}} reduced cache and memory latencies (some significantly so), increased cache bandwidth, and finally improved IMC performance allowing for better DDR4 memory support (officially JEDEC rated to support up to 2933 MHz compared to just 2666 MHz on the prior Zen core),{{cite news|last1=Mah Ung|first1=Gordon|title=AMD reveals Ryzen 2, Threadripper 2, 7nm Navi, and more in CES blockbuster|url=https://www.pcworld.com/article/3246211/computers/amd-reveals-ryzen-2-threadripper-2-7nm-navi-and-more-in-ces-blockbuster.html|access-date=9 January 2018|publisher=PC World|date=7 January 2018}} and fixed many hardware bugs found on Zen 1, such as fTPM / PSP bugs on Zen 1, and SVM / SLAT bugs on Zen 1.

Zen+ also supports improvements in the per-core clocking features, based on core utilization and CPU temperatures. These changes to the core utilization, temperature, and power algorithms are branded as "Precision Boost 2" and "XFR2" ("eXtended Frequency Range 2"), evolutions of the first-generation technologies in Zen. On Zen, XFR gave an additional 50 to 200 MHz clock speed increase (in 25 MHz increments) over the maximum Precision Boost clocks. For Zen+, XFR2 is no longer listed as a separate clock modifier. Instead, the XFR temperature, power, and clock monitoring and logic feeds into the Precision Boost 2 algorithm to adjust clocks and power consumption opportunistically and dynamically.{{cite news|last1=Bennett|first1=Kyle|title=Precision Boost Overdrive and XFR Enhanced Confusion|url=https://www.hardocp.com/article/2018/05/01/precision_boost_overdrive_xfr_enhanced_confusion|access-date=13 August 2018|publisher=HardOCP|date=1 May 2018}}{{cite web|author=AMD|title=2nd Gen AMD Ryzen Processors: XFR 2 and Precision Boost 2|url=https://www.youtube.com/watch?v=426hLGoXDbM|website=YouTube|access-date=13 August 2018|date=14 April 2018}}

Ultimately, the changes in Zen+ resulted in a 3% improvement in IPC over Zen; which in conjunction with 6% higher clock speeds resulted in up to 10% overall increase in performance.

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APU features table

{{AMD Zen+ based desktop CPUs}}

{{AMD Ryzen Threadripper 2000 series}}

{{AMD Zen+ based desktop APUs}}

{{AMD Zen+ based mobile APUs}}

In 2022, AMD announced the R2000 series of embedded APUs.{{Cite web|url=https://www.tomshardware.com/news/amd-ryzen-embedded-r2000-doubles-core-count-boosts-graphics|title=AMD Ryzen Embedded R2000 Series Doubles Core Count, Boosts Graphics by 81%|author1=Mark Tyson|date=June 21, 2022|website=Tom's Hardware}}

{{AMD Ryzen Embedded R2000 Series}}

{{Commons category|Zen microarchitecture}}

• AMD K9
• AMD K10
• Jim Keller (engineer)
• Ryzen
• Steamroller (microarchitecture)
• Zen (microarchitecture)
• Zen 2

{{reflist}}

{{AMD processors}}

{{AMD processor roadmap}}

{{DEFAULTSORT:Zen 1.5}}

Category:AMD x86 microprocessors

Category:AMD microarchitectures

Category:X86 microarchitectures

Category:Computer-related introductions in 2018