- Socket AM2
CPU socket
name = Socket AM2
formfactors = Ceramic Pin Grid Array (CPGA)
Organic Pin Grid Array (OPGA)
type = PGA-ZIF
contacts = 940
protocol =
fsb = 200 MHz System clock
1 GHzHyperTransport
voltage =
processors =Athlon 64
Athlon 64 X2
Athlon 64 FX
Opteron Sempron
Phenom
The Socket AM2, renamed from Socket M2 (to prevent using the same name asCyrix MII processors), is aCPU socket designed byAMD for desktopprocessors , including the performance, mainstream and value segments. It was released onMay 23 ,2006 , as a replacement forSocket 939 &Socket 754 .Technology
AM2 processors are incompatible with 939 motherboards and vice versa, and although it has 940 pins, it is incompatible with
Socket 940 [http://www.amd.com/gb-uk/Processors/ProductInformation/0,,30_118_9485_13041%5E12898,00.html#116574] . DDR2 can transfer more data per clock cycle, but suffers from higher latencies, while drawing less power than DDR memory, which the previousSocket 939 supported.AnandTech reported that Socket AM2 system performance was 0-7% faster than Socket 939 equivalents, with most applications about 2% faster [http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=2738&p=6] [http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=2741&p=9] , despite having over 30% greater memory bandwidth due to DDR2 support.The first processor cores to support socket AM2 are the single-core Orleans (
Athlon 64 ) and Manila (Sempron ), and the dual-core Windsor (Athlon 64 X2 andAthlon 64 FX ). Most processors on Socket AM2 includeSSE3 instructions and were developed with 90 nanometer technology. Recent models feature 65 nanometer technology (to compete with Intel and their 65nm CPUs).Socket AM2 supports AMD Phenom processors but some motherboard manufacturers did not supply newer bios files required to operate a Phenom processor.
Socket AM2 is a part of AMD's current generation of CPU sockets, along with
Socket F for servers andSocket S1 for mobile computing.There are also single-socket
Opteron processors available for AM2. [http://www.amd.com/gb-uk/Processors/ProductInformation/0,,30_118_8826_9384~111161,00.html#111182]While technical documentation was readily available for earlier generations of AMD processor sockets, the "AM2 Processor Functional Data Sheet" (AMD document number 31117) has not been made publicly available.
uccessors
Multiple sockets have been announced which are pin-compatible with socket AM2, but which differ in terms of features.
;Socket AM2+Socket AM2+ is an intermediate successor to socket AM2, which features split power planes,
DDR2 SDRAM andHyperTransport 3.0. Socket AM2+ chips can plug into a socket AM2 motherboard, but operate only withHyperTransport 2.0.;Socket AM3AMD has announcedFact|date=July 2007 that Socket AM3 processors will be able to run on Socket AM2 motherboards, but not vice-versa. AM3 processors will have a new memory controller supporting both DDR2 and
DDR3 SDRAM , allowing backwards compatibility with AM2 and AM2+ motherboards. Since AM2 processors lack the new memory controller, they will not work on AM3 motherboards.ee also
*
List of AMD Sempron microprocessors
*List of AMD Athlon 64 microprocessors
*List of AMD Opteron microprocessors External links
* [http://www.amd.com/us-en/Processors/ProductInformation/0,,30_118_9485_9487%5E9505,00.html AMD FAQ Athlon64 socket AM2]
* [http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=2762 AM2 launch article] (AnandTech )
* [http://www.tomshardware.com/2006/05/23/amd_reinvents_itself/ AMD Reinvents itself] (Tom's Hardware Guide )
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