Type PGA-ZIF Contacts 940 | Chip form factors OPGA Voltage range 0.8 - 1.55 V | |
 | ||
FSB frequency 200 MHz System clock
800/1000 MHz HyperTransport link Processors AMD Athlon 64 FX
AMD Opteron | ||
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.
Technical specifications
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 the acceptance of only 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.