Socket 4

Socket 4, presented in 1993, was the first CPU socket designed for the early P5 Pentium microprocessors. Socket 4 was the only 5-volt socket for the Pentium. Socket 4 does support a special Pentium OverDrive, which allows running at 120 MHz (for the 60 MHz Pentium) or 133 MHz (for the 66 MHz Pentium).^[1]

TypeZIF

Chip form factorsPPGA

Contacts273

FSB protocol?

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Socket 4

Type	ZIF
Chip form factors	PPGA
Contacts	273
FSB protocol	?
FSB frequency	60, 66 MT/s
Voltage range	5 V
Processors	Intel P5 Pentium
Predecessor	Socket 3
Successor	Socket 5
This article is part of the CPU socket series

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Socket 4 was superseded by the 3.3-volt-powered Socket 5 in 1994.