Editing Socket 939

{{Short description|CPU socket for old AMD CPUs}}
{{for|the APU Socket officially called "Socket AM1"|Socket AM1}}{{CPU socket
|name = Socket 939
|image = [[Image:Sockel-939.jpg|290px]]
|formfactors = [[OPGA]]
|type = [[Pin grid array|PGA]]-[[Zero insertion force|ZIF]]
|contacts = 939
|fsb = 200 MHz System clock <br>1000 MHz [[HyperTransport]] link
|voltage = 0.8–1.55 V
| predecessor = [[Socket 754]]
| successor   = [[Socket AM2|AM2]]
|processors = [[Advanced Micro Devices|AMD]] [[Athlon 64]] (3000+ - 4000+)<br>[[Advanced Micro Devices|AMD]] [[Athlon 64|Athlon 64 FX]] (53 - 60) <br>[[Advanced Micro Devices|AMD]] [[Athlon 64 X2]] (3600+ - 4800+)<br>Some [[Advanced Micro Devices|AMD]] [[Opteron]] 1xx series <br>Some [[Sempron]] 3x00+ (Step E3, E6)|release-date=2004-06|memory=DDR}}

'''Socket 939''' (also known as Socket AM1) is a [[CPU socket]] released by [[Advanced Micro Devices|AMD]] in June 2004 to supersede the previous [[Socket 754]] for [[Athlon 64]] processors. Socket 939 was succeeded by [[Socket AM2]] in May 2006. It was the second socket designed for AMD's [[AMD64]] range of processors.

==Availability==
Socket 939 processors and motherboards became available in June 2004, and were superseded by [[Socket AM2]] in May 2006. AMD has ceased the production of this socket to focus on current and future platforms. However, at least one new Socket 939 motherboard has been produced utilizing a modern AMD chipset since AMD transitioned to Socket AM2.  In 2009 motherboard maker [[ASRock]] released a new Socket 939 motherboard.  The motherboard utilizes the AMD [[AMD 700 chipset series#785G|785G]] IGP chipset and a [[AMD 700 chipset series#SB710|SB710]] southbridge.<ref>{{cite web |url=http://www.asrock.com/mb/AMD/939A785GMH128M/index.asp |title=939A785GMH/128M |website=[[ASRock]] |access-date=2017-07-20}}</ref>

Both single and dual-core processors were manufactured for this socket under the Athlon 64, Athlon 64 FX, Athlon 64 X2, Sempron and Opteron names. The Opteron 190, featuring a 2.8&nbsp;GHz clock speed and 1 MB of Level 2 cache per core, was the fastest dual-core processor manufactured for this socket, however the availability of this processor was limited. The Opteron 185 (locked multiplier) and Athlon 64 FX-60 (unlocked multiplier), with a slightly slower clock speed of 2.6&nbsp;GHz, were the fastest widely available dual-core processors for the socket. The Opteron 156 ran slightly faster at 3&nbsp;GHz, making it the fastest single core processor supporting the socket 939 interface.<ref>{{cite web|title=AMD Opteron 156|url=http://www.cpu-world.com/CPUs/K8/AMD-Opteron%20156%20-%20OSA156DAA5BN%20%28OSA156BNBOX%29.html|website=CPU-World}}</ref>

==Technical specifications==
Socket 939 supports dual channel [[DDR SDRAM]] memory, with 6.4 GB/s memory bandwidth.  Processors for this socket support [[3DNow!]], [[SSE2]], and [[SSE3]] (revision E or later) instruction sets. It features one 16 bit [[HyperTransport]] link running up to 1000 MT/s. 

In regards to video expansion slots, Socket 939 systems can be found with both [[Accelerated Graphics Port|AGP]] and [[PCIe]] slots. Only one slots can be used at a given time for video, however. The same thing can be found in some [[LGA 775]] systems as well, especially for those with a VIA PT880 Pro chipset.

Processors using this socket have 64KB each Level 1 instruction and data caches, and either 256KB, 512KB or 1 MB Level 2 cache.<ref>{{cite web|url=https://www.amd.com/us-en/Processors/ProductInformation/0,,30_118_9485_9487%5E9493,00.html|archive-url=https://web.archive.org/web/20090416100828/http://www.amd.com/us-en/Processors/ProductInformation/0,,30_118_9485_9487%5E9493,00.html|archive-date=2009-04-16|title=Key Architectural Features|accessdate=2017-07-20|website=[[AMD]]}}</ref>

==See also==
* [[List of AMD microprocessors]]

==References==
{{Reflist}}

==External links==
*{{webarchive |url=https://web.archive.org/web/20090305094149/http://www.amd.com/us-en/Processors/TechnicalResources/0,,30_182_739_7203,00.html |title=AMD Athlon™ Processor Tech Docs }}
*{{webarchive |url=https://web.archive.org/web/20100331083253/http://support.amd.com/us/Processor_TechDocs/31411.pdf |title=AMD 939-Pin Package Functional Data Sheet (rev 3.03)}}

{{amdsock}}

[[Category:AMD sockets]]