# Socket 1

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> Markdown URL: https://mediated.wiki/source/Socket_1.md
> Source: https://en.wikipedia.org/wiki/Socket_1
> Source revision: 1332315714
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

{{Short description|Intel CPU socket}}
{{Infobox CPU socket
|name        = Socket 1
|formfactors = [PGA](/source/Pin_grid_array)
|contacts    = 169
|type        = [ZIF](/source/Zero_insertion_force)
|protocol    = ?
|fsb         = 16–33 MT/s
|voltage     = 5 V
|processors  = [Intel](/source/Intel) [486 SX](/source/486_SX), [486 DX](/source/486_DX), [486 DX2](/source/486_DX2), [486 OverDrive](/source/486_OverDrive)
|predecessor = 
|successor   = [Socket 2](/source/Socket_2)
|image=Socket 1 ZIF.png
}}

'''Socket 1''', originally called the "OverDrive" socket, was the second of a series of standard [CPU socket](/source/CPU_socket)s created by [Intel](/source/Intel) into which various [x86](/source/x86) [microprocessor](/source/microprocessor)s were inserted. It was an upgrade to Intel's first standard 169-pin [pin grid array](/source/pin_grid_array) (PGA) socket and the first with an official designation. Socket 1 was intended as a [486](/source/i486) upgrade socket, and added one extra pin to prevent upgrade chips from being inserted incorrectly.

Socket 1 was a 169-pin [zero insertion force](/source/zero_insertion_force) (ZIF) 17×17 [pin grid array](/source/pin_grid_array) (PGA) socket suitable for the 5-[volt](/source/volt), 16 to 33 [MHz](/source/MHz) [486 SX](/source/486_SX), [486 DX](/source/486_DX), [486 DX2](/source/486_DX2) and [486 OverDrive](/source/486_OverDrive) processors.<ref>{{cite web|title=Intel Socket 1 Specification |website=The PC Guide |first=Charles M. |last=Kozierok |url=http://www.pcguide.com/ref/cpu/char/socketSocket1-c.html |date=April 17, 2001 |accessdate=2008-03-30 |url-status=dead |archive-date=2008-03-20 |archive-url=https://web.archive.org/web/20080320071309/http://www.pcguide.com/ref/cpu/char/socketSocket1-c.html }}</ref> At least two sources claim that it was also used for the [i487SX](/source/i487SX) upgrade socket.<ref name=informit>{{cite web | last= | first= | date=June 8, 2001 | url=https://www.informit.com/articles/article.aspx?p=130978&seqNum=28 | title=Microprocessor Types and Specifications | work=InformIT | publisher=Pearson | archiveurl=https://web.archive.org/web/20211207005251/https://www.informit.com/articles/article.aspx?p=130978&seqNum=28 | archivedate=December 7, 2021}}</ref><ref>{{cite web |title=Intel 487SX Math Coprocessor |url=https://micro.magnet.fsu.edu/optics/olympusmicd/galleries/chips/intel487sxa.html |website=Molecular Expressions: Science, Optics & You |publisher=Florida State University |access-date=January 11, 2026}}</ref>

==See also==
* [List of Intel microprocessors](/source/List_of_Intel_microprocessors)

==References==
{{Reflist}}

==External links==
* [http://pclinks.xtreemhost.com/sockets.htm CPU Sockets Chart]

{{earlysock}}
{{intelsock}}

Socket 001

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Adapted from the Wikipedia article [Socket 1](https://en.wikipedia.org/wiki/Socket_1) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Socket_1?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.