Socket A

Socket 462 / A

Type	PGA-ZIF
Chip form factors	Ceramic Pin Grid Array (CPGA) Organic Pin Grid Array (OPGA)
Contacts	462
FSB protocol	EV6
FSB frequency	200 MT/s, 266 MT/s, 333 MT/s, 400 MT/s
Voltage range	1.0–2.05V
Processors	AMD Athlon (600–1400 MHz) AMD Athlon XP (850–2333 MHz) AMD Duron (600–1800 MHz) AMD Sempron (1500–2200 MHz) AMD Athlon MP (1000–2133 MHz) AMD Geode NX (667–1800 MHz)
Predecessor	Slot A
Successor	Socket 754 Socket 939 Socket 940
This article is part of the CPU socket series

Socket A (also known as Socket 462) is a zero insertion force pin grid array (PGA) CPU socket used for AMD processors ranging from the Athlon Thunderbird to the Athlon XP/MP 3200+, and AMD budget processors including the Duron and Sempron. Socket A also supports AMD Geode NX embedded processors (derived from the Mobile Athlon XP). It compliments (and later supersedes) the prior Slot A CPU interface used in some Athlon Thunderbird processors. The front-side bus frequencies supported for the AMD Athlon XP and Sempron are 133 MHz, 166 MHz, and 200 MHz. Socket A supports 32-bit CPUs only.

The socket is a zero insertion force pin grid array type with 462 pins, hence the alternative name Socket 462. About nine pins in the socket are blocked to discourage accidental insertion of Socket 370 CPUs on Socket A motherboards.

Socket A was replaced by Socket 754 and Socket 939 during 2003 and 2004 respectively, except for its use with Geode NX processors.