Socket 423

Socket 423

Release date	2000
Designed by	Intel
Type	PGA-ZIF
Chip form factors	Organic Land Grid Array (OLGA) on Interposer (OOI) (INT2 and INT3)
Contacts	423
FSB protocol	AGTL+
FSB frequency	400 MT/s
Voltage range	1.0–1.85 V
Processor dimensions	2.1 × 2.1 inches[1]
Processors	Intel Pentium 4 (1.3–2.0 GHz)
Predecessor	Socket 370
Successor	Socket 478
This article is part of the CPU socket series

Socket 423 is a 423-pin CPU socket used by Intel's first generation of Pentium 4 processors based on the Willamette core.

This socket was short-lived, as it became apparent that its electrical design proved inadequate for raising clock speeds beyond 2.0 GHz. Intel produced chips using this socket for less than a year, from November 2000 to August 2001.

Socket 423 was replaced by Socket 478 in 2001. Socket 478, being microPGA, was cheaper to manufacture than Socket 423.^[2]