Specifications
Computer Architecture and Maintenance (G-Scheme-2014)
The   original   slot,   or  Slot   1  (pictured   below),   was   first   released   by   the   Intel 
Corporation in 1997 as a successor to the Socket 8. Later, AMD released another slot 
processor known as the Slot A in 1999. Both slots look similar but are not compatible. 
Later, Intel released the slot 2, which was a bigger slot used with the later versions of 
the   Pentium   II   processors.   Today,   slot   processors   are   no   longer   found   in   new 
computers and have been replaced by sockets.
A slot is another name for an expansion slot such as a ISA, PCI, AGP slot, or memory 
slots.
The other form that processors take is a chip soldered on to a card, which then connects 
to a motherboard by a slot similar to an expansion slot. The picture slows a slot for a 
Pentium 3 processor.
Processor Socket and Slot Types
Intel and AMD have created a set of socket and slot designs for their processors. Each 
socket   or   slot   is   designed   to   support   a   different   range   of   original   and   upgrade 
processors. Table 3.18 shows the designations for the various 486 and newer processor 
sockets/slots and lists the chips designed to plug into them.
Sockets 1, 2, 3, and 6 are 486 processor sockets and are shown together in Figure so you 
can see the   overall   size   comparisons and pin  arrangements   between   these sockets. 
Sockets 4, 5, 7, and 8 are Pentium and Pentium Pro processor sockets and are shown 
together in Figure so you can see the overall size comparisons and pin arrangements 
between these sockets. More detailed drawings of each socket are included throughout 
the remainder of this section with thorough descriptions of the sockets.
486 processor sockets.
Prepared By – Prof. Manoj.kavedia (9860174297 – 9324258878 ) (www.kavediasir.yolasite.com)
20










