Chip Class |
Socket |
Pins |
Layout |
Voltage |
Supported Processors |
Introduced |
Intel/AMD 486 class |
Socket 1 |
169 |
17x17 PGA |
5V |
486 SX/SX2, DX/DX2, DX4 OD |
Apr. '89 |
Socket 2 |
238 |
19x19 PGA |
5V |
486 SX/SX2, DX/DX2, DX4 OD, 486 Pentium OD |
Mar. '92 |
|
Socket 3 |
237 |
19x19 PGA |
5V/3.3V |
486 SX/SX2, DX/DX2, DX4, 486 Pentium OD, AMD 5x86 |
Feb. '94 |
|
Socket 6 [1] |
235 |
19x19 PGA |
3.3V |
486 DX4, 486 Pentium OD |
Feb. '94 |
|
Intel/AMD 586 (Pentium) class |
Socket 4 |
273 |
21x21 PGA |
5V |
Pentium 60/66, OD |
Mar. '93 |
Socket 5 |
320 |
37x37 SPGA |
3.3V/3.5V |
Pentium 75-133, OD |
Mar. '94 |
|
Socket 7 |
321 |
37x37 SPGA |
VRM |
Pentium 75-233+, MMX, OD, AMD K5/K6, Cyrix M1/II |
June '95 |
|
Intel 686 (Pentium II/III) SPGA |
Socket 8 |
387 |
Dual-pattern SPGA |
Auto VRM |
Pentium Pro, OD |
Nov. '95 |
class |
Slot 1 (SC242) |
242 |
Slot |
Auto VRM |
Pentium II/III, Celeron SECC |
May '97 |
Socket 370 |
370 |
37x37 SPGA |
Auto VRM |
Celeron/Pentium III PPGA/FC-PGA |
Nov. '98 |
|
Intel Pentium 4 class |
Socket 423 |
423 |
39x39 SPGA |
Auto VRM |
Pentium 4 FC-PGA |
Nov. '00 |
Socket 478 |
478 |
26x26 mPGA |
Auto VRM |
Pentium 4/Celeron FC-PGA2 |
Oct. '01 |
|
Socket T (LGA775) |
775 |
30x33 LGA |
Auto VRM |
Pentium 4/Celeron/Pentium D/Pentium Extreme Edition/LGA775 |
June '04 |
|
AMD K7 class |
Slot A |
242 |
Slot |
Auto VRM |
AMD Athlon SECC |
June '99 |
Socket A (462) |
462 |
37x37 SPGA |
Auto VRM |
AMD Athlon/Athlon XP/Duron PGA/FC-PGA |
June '00 |
|
AMD K8 class |
Socket 754 |
754 |
29x29 mPGA |
Auto VRM |
AMD Athlon 64 |
Sep. '03 |
Socket 939 |
939 |
31x31 mPGA |
Auto VRM |
AMD Athlon 64 v.2 |
June '04 |
|
Socket 940 |
940 |
31x31 mPGA |
Auto VRM |
AMD Athlon 64FX, Opteron |
Apr. '03 |
|
Intel/AMD server and workstation class |
Slot 2(SC330) |
330 |
Slot |
Auto VRM |
Pentium II/III Xeon |
Apr. '98 |
Socket 603 |
603 |
31x25 mPGA |
Auto VRM |
Xeon (P4) |
May '01 |
|
Socket 604 |
604 |
31x25 mPGA |
Auto VRM |
Xeon (P4) |
Oct. '03 |
|
Socket PAC418 |
418 |
38x22 |
Auto VRM split SPGA |
Itanium |
May '01 |
|
Socket PAC611 |
611 |
25x28 |
Auto VRM mPGA |
Itanium 2 |
July '02 |
|
Socket 940 |
940 |
31x31 mPGA |
Auto VRM |
AMD Athlon 64FX, Opteron |
Apr. '03 |
|
FC-PGA = Flip-chip pin grid array |
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FC-PGA2 = FC-PGA with an Integrated Heat Spreader (IHS) |
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OD = OverDrive (retail upgrade processors) |
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PAC = Pin array cartridge |
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PGA = Pin grid array |
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PPGA = Plastic pin grid array |
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SC242 = Slot connector, 242 pins |
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SC330 = Slot connector, 330 pins |
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SECC = Single edge contact cartridge |
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SPGA = Staggered pin grid array |
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mPGA = Micro pin grid array |
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VRM = Voltage regulator module with variable voltage output determined by module type or manual jumpers |
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Auto VRM = Voltage regulator module with automatic voltage selection determined by processor Voltage ID (VID) pins |