Socket 940
CPU socket for old AMD CPUs
From Wikipedia, the free encyclopedia
Socket 940 is a 940-pin socket for 64-bit AMD Opteron server processors and AMD Athlon 64 FX consumer processors. It was one of the first sockets designed for AMD's AMD64 range of processors.
| |
| Type | PGA-ZIF |
|---|---|
| Chip form factors | OPGA |
| Contacts | 940 |
| FSB frequency | 200 MHz System clock 800/1000 MHz HyperTransport link |
| Voltage range | 0.8–1.55 V |
| Processor dimensions | 40 mm × 40 mm 1,600 mm² |
| Processors | AMD Athlon 64 FX AMD Opteron |
| Predecessor | Socket A |
| Successor | Socket F |
This article is part of the CPU socket series | |
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.[1]
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 CPUs integrate a DDR controller, whereas AM2 models use a DDR2 controller.[2]