Specifications

Computer Architecture and Maintenance (G-Scheme-2014)

Socket M2

In the second quarter of 2006, AMD introduced processors that use a new socket, called

Socket M2 (see Figure ). AMD intends for M2 to be the eventual replacement for the

confusing array of Socket 754, Socket 939, and Socket 940 form factors it uses for the

Athlon 64, Athlon 64 FX, Athlon 64 X2, Opteron, and Socket 754 AMD Sempron

processors.

Figure. Socket M2. The cutout corner at the lower left

indicates pin 1.

Although Socket M2 contains 940 pins—the same number as

used by Socket 940—Socket M2 is designed to support the

integrated dual-channel DDR2 memory controllers that were

added to the Athlon 64 and Opteron processor families in

2006. Processors designed for Sockets 754, 939, and 940

include DDR memory controllers and are not pin compatible with Socket M2.

Processor Slots

After introducing the Pentium Pro with its integrated L2 cache, Intel discovered that

the physical package it chose was very costly to produce. Intel was looking for a way to

easily integrate cache and possibly other components into a processor package, and it

came up with a cartridge or board design as the best way to do this. To accept its new

cartridges, Intel designed two types of slots that could be used on motherboards.

Slot 1 is a 242-pin slot designed to accept Pentium II, Pentium III, and most Celeron

processors. Slot 2, on the other hand, is a more sophisticated 330-pin slot designed for

the Pentium II Xeon and Pentium III Xeon processors, which are primarily for

workstations and servers. Besides the extra pins, the biggest difference between Slot 1

and Slot 2 is the fact that Slot 2 was designed to host up to four-way or more processing

in a single board. Slot 1 allows only single or dual processing functionality.

Note that Slot 2 is also called SC330, which stands for slot connector with 330 pins. Intel

later discovered less-expensive ways to integrate L2 cache into the processor core and

no longer produces Slot 1 or Slot 2 processors. Both Slot 1 and Slot 2 processors are now

obsolete, and many systems using these processors have been retired or upgraded with

socket-based motherboards.

Prepared By – Prof. Manoj.kavedia (9860174297 – 9324258878 ) (www.kavediasir.yolasite.com)