Socket 940 is a 940-pin socket for 64-bit
AMD
Advanced Micro Devices, Inc. (AMD) is an American multinational semiconductor company based in Santa Clara, California, that develops computer processors and related technologies for business and consumer markets. While it initially manufact ...
Opteron
Opteron is AMD's x86 former server and workstation processor line, and was the first processor which supported the AMD64 instruction set architecture (known generically as x86-64 or AMD64). It was released on April 22, 2003, with the ''SledgeHa ...
server processors and AMD
Athlon 64 FX
The Athlon 64 is a ninth-generation, AMD64-architecture microprocessor produced by Advanced Micro Devices (AMD), released on September 23, 2003. It is the third processor to bear the name ''Athlon'', and the immediate successor to the Athlon#Athlo ...
consumer 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
Opteron is AMD's x86 former server and workstation processor line, and was the first processor which supported the AMD64 instruction set architecture (known generically as x86-64 or AMD64). It was released on April 22, 2003, with the ''SledgeHa ...
and the older AMD
Athlon 64 FX
The Athlon 64 is a ninth-generation, AMD64-architecture microprocessor produced by Advanced Micro Devices (AMD), released on September 23, 2003. It is the third processor to bear the name ''Athlon'', and the immediate successor to the Athlon#Athlo ...
(
FX-51) use Socket 940.
Technical specifications
Microprocessor
A microprocessor is a computer processor where the data processing logic and control is included on a single integrated circuit, or a small number of integrated circuits. The microprocessor contains the arithmetic, logic, and control circ ...
s 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
Registered (also called buffered) memory modules have a register between the DRAM modules and the system's memory controller. They place less electrical load on the memory controller and allow single systems to remain stable with more memory ...
.
While the more recent 940-pin
socket AM2
The Socket AM2, renamed from Socket M2 (to prevent using the same name as Cyrix MII processors), is a CPU socket designed by AMD for desktop processors, including the performance, mainstream and value segments. It was released on May 23, 2006, ...
is visually similar to this one, the two are electrically incompatible due to the integrated
memory controller
The memory controller is a digital circuit that manages the flow of data going to and from the computer's main memory. A memory controller can be a separate chip or integrated into another chip, such as being placed on the same die or as an int ...
. Socket 940 CPUs integrate a
DDR controller, whereas AM2 models use a
DDR2 controller.
See also
*
List of AMD microprocessors
This article gives a list of AMD microprocessors, sorted by generation and release year. If applicable and openly known, the designation(s) of each processor's core (versions) is (are) listed in parentheses. For an overview over concrete product, y ...
References
External links
AMD Product InformationAMD Socket 940 Design Specification (rev 3.03)AMD 940 Pin Package Functional Data Sheet (rev 3.05)
{{amdsock
AMD server sockets