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Socket 939

Socket 939
Sockel-939.jpg
Type PGA-ZIF
Chip form factors OPGA
Contacts 939
FSB frequency 200 MHz System clock
1000 MHz HyperTransport link
Voltage range 0.8 - 1.55 V
Processors AMD Athlon 64 (3000+ - 4000+)
AMD Athlon 64 FX (51 - 60)
AMD Athlon 64 X2 (3600+ - 4800+)
Some AMD Opteron 1xx series
Some Sempron 3x00+ (Step E3, E6)
Predecessor Socket 754
Successor AM2

This article is part of the CPU socket series

Socket 939 is a CPU socket released by 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 is the second socket designed for AMD's AMD64 range of processors.

Socket 939 processors and motherboards became available in June 2004, and were superseded by Socket AM2 in May 2006.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 785G IGP chipset and a SB710 southbridge.

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 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 GHz, were the fastest widely available dual-core processors for the socket. The Opteron 156 ran slightly faster at 3 GHz, making it the fastest single core processor supporting the socket 939 interface.

It supports dual channel DDR SDRAM memory, with 6.4 GB/s memory bandwidth. Socket 939 processors 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 AGP slots and PCI-E x16 slots as well.

Processors using this socket have 64KB each Level 1 instruction and data caches, and either 256KB, 512KB or 1 MB Level 2 cache.


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