Socket 1

Socket 1, originally called the "OverDrive" socket, was the second of a series of standard CPU sockets created by Intel into which various x86 microprocessors were inserted. It was an upgrade to Intel's first standard 169-pin pin grid array (PGA) socket and the first with an official designation. Socket 1 was intended as a 486 upgrade socket, and added one extra pin to prevent upgrade chips from being inserted incorrectly.

Socket 1
Socket 1 ZIF.png
Chip form factorsPGA
FSB protocol?
FSB frequency16–33 MT/s
Voltage range5 V
ProcessorsIntel 486 SX, 486 DX, 486 DX2, 486 OverDrive
SuccessorSocket 2

This article is part of the CPU socket series

Socket 1 was a 169-pin low insertion force (LIF) or zero insertion force (ZIF) 17×17 pin grid array (PGA) socket suitable for the 5-volt, 16 to 33 MHz 486 SX, 486 DX, 486 DX2 and 486 OverDrive processors.[1]

See alsoEdit


  1. ^ Intel Socket 1 Specification,, retrieved 2008-03-30

External linksEdit