Article · Wikipedia archive · Last revised May 27, 2026

Socket 3

Socket 3 was a series of CPU sockets for various x86 microprocessors. It was sometimes found alongside a secondary socket designed for a math coprocessor chip, such as the 487. Socket 3 resulted from Intel's creation of lower voltage microprocessors. An upgrade to Socket 2, it rearranged the pin layout. Socket 3 is compatible with 168-pin socket CPUs.

Last revised
May 27, 2026
Read time
≈ 1 min
Length
192 w
Citations
2
Source
Socket 3
TypeZIF
Chip form factorsPPGA
Contacts237
FSB protocol?
FSB frequency25–50 MT/s
Voltage range3.3 V and 5 V
ProcessorsIntel 486 SX, 486 DX, 486 DX2, 486 DX4, 486 OverDrive, Pentium OverDrive
AMD Am486 and Am5x86
PredecessorSocket 2
SuccessorSocket 4
Socket 6

This article is part of the CPU socket series

Socket 3 was a series of CPU sockets for various x86 microprocessors. It was sometimes found alongside a secondary socket designed for a math coprocessor chip, such as the 487. Socket 3 resulted from Intel's creation of lower voltage microprocessors. An upgrade to Socket 2, it rearranged the pin layout. Socket 3 is compatible with 168-pin socket CPUs.1

Socket 3 was a 237-pin zero insertion force (ZIF) 19×19 pin grid array (PGA) socket suitable for the 3.3 V and 5 V, 25–50 MHz Intel 486 SX, 486 DX, 486 DX2, 486 DX4, 486 OverDrive and Pentium OverDrive processors as well as AMD Am486, Am5x86 and Cyrix Cx5x86 processors.2

See also

See also

References

References

  1. "Intel CPUs". VOGONS Wiki. 19 October 2020. Retrieved 17 June 2021.
  2. Kozierok, Charles M. (17 April 2001). "Intel Socket 3 Specification". The PC Guide. Archived from the original on 2 October 2018. Retrieved 2009-03-30.