Socket AM3+

The AM3+ Socket specification contains a few noteworthy design changes over its AM3 predecessor. The 942 pin count for the AM3+ is an increase of one compared to the AM3 Socket layout.{{cite web|url=http://www.techpowerup.com/reviews/AMD/FX8150/2.html |title=AMD FX-8150 3.60 GHz with Windows patches |publisher=TechPowerUp |date=2012-02-13 |accessdate=2012-04-06 |archive-date=17 April 2012 |archive-url=https://web.archive.org/web/20120417224128/http://www.techpowerup.com/reviews/AMD/FX8150/2.html |url-status=live}} The AM3+ Socket has larger pin socket diameter of 0.51 mm compared to 0.45 mm with the AM3 Socket. There is a faster serial link of 3400 kHz from the CPU to the power controller, compared to 400 kHz. The AM3+ Socket offers improved power regulation and power quality specifications, including an increased maximum current support of 145 A versus 110 A. There is also a redesigned CPU cooler retention harness allowing for slightly better airflow for CPU cooling, while retaining cooler backward compatibility.{{cite web|url=http://www.asrock.com/news/events/2011AM3+/ |title=ASRock AMD Real AM3+ motherboards |publisher=www.asrock.com |accessdate=2012-04-06 |archive-date=10 April 2012 |archive-url=https://web.archive.org/web/20120410200251/http://www.asrock.com/news/events/2011AM3%2B/ |url-status=live}}

Some manufacturers have attempted to bring AM3+ support to some of their AM3 technology motherboards via use of the AM3+ socket and a BIOS upgrade.{{Cite web |title=ASUS First to Provide AM3+ CPU Ready Solution for Current AM3 and Future AM3+ Motherboards |url=http://event.asus.com/2011/mb/AM3_PLUS_Ready/ |url-status=dead |archive-url=https://web.archive.org/web/20110815103858/http://event.asus.com:80/2011/mb/AM3%5FPLUS%5FReady/ |archive-date=15 August 2011 |website=event.asus.com}} AM3+ CPUs are not mechanically compatible with AM3 sockets as AM3+ CPUs have an additional pin that the AM3 socket can not accommodate. Another issue is the use of the sideband temperature sensor interface for reading the temperature from the CPU. Therefore, some CPU PWM fan headers may only run at full speed. Also, certain power-saving features may not work, due to lack of support for rapid V_CORE switching.{{cite web |url=http://www.pctreiber.net/2011/cebit-asrock-zeigt-eine-reihe-an-am3-mainboards-mit-alten-chipsatzen.html |title=Cebit: ASRock zeigt eine Reihe an AM3+ Mainboards mit alten Chipsätzen |publisher=PCTreiber.Net |date=2011 |accessdate=2012-01-10 |archive-date=8 January 2012 |archive-url=https://web.archive.org/web/20120108054116/http://www.pctreiber.net/2011/cebit-asrock-zeigt-eine-reihe-an-am3-mainboards-mit-alten-chipsatzen.html |url-status=dead}}

AM3+ CPUs could not operate properly in many systems designed for AM2+ or AM2 CPUs due to the AM3+ CPUs' DDR3 memory controller being incompatible with the DDR2 memory generally used by AM2 and AM2+ boards.

The 4 holes for fastening the heatsink to the motherboard are placed in a rectangle with lateral lengths of 48 mm and 96 mm for AMD's sockets Socket AM2, Socket AM2+, Socket AM3, Socket AM3+ and Socket FM2. Cooling solutions should therefore be interchangeable.

• List of AMD FX microprocessors
• List of AMD chipsets

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{{AMD CPU sockets}}

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Category:AMD sockets