|Chip form factors||OPGA|
|FSB frequency||200 MHz System clock
800/1000 MHz HyperTransport link
|Voltage range||0.8 - 1.55 V|
|Processors||AMD Athlon 64 FX
This article is part of the CPU socket series
Socket 940 is a 940-pin socket for 64-bit AMD server processors. This socket is entirely square in shape and pins are arranged in a grid with the exception of four key pins used to align the processor and the corners. AMD's Opteron and the older AMD Athlon 64 FX (FX-51) use Socket 940.
Microprocessors designed for this socket were intended to be used in a server platform, and as such provide additional features to provide additional robustness. One such feature is only the acceptance of registered memory.
While the more recent 940-pin socket AM2 is visually similar to this one, the two are electrically incompatible due to the integrated memory controller. Socket 940 CPU's integrate a DDR controller, whereas AM2 models utilise a DDR2 controller.
- Kronlund, Doug (2004-06-27). "Socket 940 vs. 939". Short-Media. Retrieved 2007-01-28.
- Bert Töpelt; Daniel Schuhmann, Frank Völkel (2006-05-23). "AM2: AMD Reinvents Itself". Tom's Hardware Guide. Retrieved 2007-01-28.
- AMD Product Information
- AMD Technical Details for Athlon64 and Athlon FX
- AMD Socket 940 Design Specification (rev 3.03)
- AMD 940 Pin Package Functional Data Sheet (rev 3.05)