cpu:cpu_pins_and_sockets [Professor Messer Wiki]

Intel

CPU	Pentium	Pentium Pro	Pentium 2	Celeron	Pentium 3	Pentium 4	Xeon
Package	PGA	SPGA	SEC	SEP, PGA, SEC	SEC, PGA	PGA	SEC, PGA
Sockets	Socket 4 Socket 5 Socket 7	Socket 8	Slot 1	Slot 1 Socket 370 Socket 478	Slot 1 Socket 370	Socket 423 Socket 478	Slot 2 Socket 603
Pins	273 320 296 or 321	387	242	242 370 478	242 370	423 478	330 603

CPU	K5	K6	Athlon	Duron	Thunderbird	Athlon XP
Package	PGA	PGA	SEC	PGA	PGA	PGA
Sockets	Socket 5 Socket 7	Socket 7	Slot A	Socket A	Socket A	Socket A
Pins	320 296 or 321	296 or 321	242	462	462	462