Central Processing Units, Voltages, Technical Specifications

Detailed description of CPU Types, Bus Speeds, Clock
multipliers, core Voltages, I/O Voltages,
Socket pin requirements, Socket Types and descriptions

4th Generation AMD 486 series CPU, 1990-92
CPU Type & Speed	Bus Speed	Clock Multi	Core V	I/O V	MMX	Socket Number	L1	L2
486SX-33 486SX-40 486SX2-50 486SX2-66 486DX-25 486DX-33 486DX-40 486DX2-50 486DX2-66 486DX2-66-WB 486DX4-75 486DX2-80 486DX4-100 486DX4-100-WB 486DX4-120 X5-5X86-133	33 MHz * 40 MHz * 25 MHz 33 MHz * 25 MHz 33 MHz * 40 MHz * 25 MHz 33 MHz * 33 MHz * 40 MHz * 25 MHz 33 MHz * 33 MHz * 40 MHz * 33 MHz *	1.0x 1.0x 2.0x 2.0x 1.0x 1.0x 1.0x 2.0x 2.0x 2.0x 2.0x 3.0x 3.0x 3.0x 3.0x 4.0x	5.0v 5.0v 5.0v 5.0v 5.0v 5.0v 5.0v 5.0v 3.0v 5.0v 3.0v 3.0v 3.0v 3.0v 3.0v 3.45v			1,2,3 1,2,3 1,2,3 1,2,3 1,2,3 1,2,3 1,2,3 1,2,3 3 3 3 3 3 3 3 3
5th Generation AMD K5 series CPU, 1996
K5-PR75 K5-PR90 K5-PR100 K5-PR120 K5-PR133 K5-PR150 K5-PR166	50 MHz 60 MHz 66 MHz 60 MHz 66 MHz 60 MHz 66 MHz	1.5x 1.5x 1.5x 1.5x 1.5x 1.75x 1.75x	3.52v 3.52v 3.52v 3.52v 3.52v 3.52v 3.52v			7 7 7 7 7 7 7	24 Kb 24 Kb 24 Kb 24 Kb 24 Kb 24 Kb 24 Kb
6th Generation AMD K6 series CPU, 1997
166 200 233 266	66 MHz 66 MHz 66 MHz 66 MHz	2.5x 3.0x 3.5x 4.0x	2.9v 2.9v 2.9v 2.9v	3.3v 3.3v 3.3v 3.3v	Yes Yes Yes Yes	7 7 7 7	64 Kb 64 Kb 64 Kb 64 Kb
6th Generation AMD K6-2 series CPU, 1998
266 300 333 350 366 380 400 450 475 500 533 550	66 MHz 100 MHz 95 MHz 100 MHz 66 MHz 95 MHz 100 MHz 100 MHz 95 MHz 100 MHz 97 MHz 100 MHz	4.0x 3.0x 3.5x 3.5x 5.5x 4.0x 4.0x 4.5x 5.5x 5.0x 5.5x 5.5x	2.2v 2.2v 2.2v 2.2v 2.2v 2.2v 2.2v 2.4v 2.4v 2.2v 2.2v 2.2v	3.3v 3.3v 3.3v 3.3v 3.3v 3.3v 3.3v 3.3v 3.3v 3.3v 3.3v 3.3v	Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes	Super 7 Super 7 Super 7 Super 7 Super 7 Super 7 Super 7 Super 7 Super 7 Super 7 Super 7 Super 7	64 Kb 64 Kb 64 Kb 64 Kb 64 Kb 64 Kb 64 Kb 64 Kb 64 Kb 64 Kb 64 Kb 64 Kb
6th Generation AMD K6-III series CPU, 1999
400 450	95 MHz 100 MHz	5.0x 5.0x	2.0v 2.0v	3.3v 3.3v	Yes Yes	Super 7 Super 7	64 Kb 64 Kb	256 Kb 256 Kb
AMD K6-2+ series CPU, 2000
450 475 500 533 550	100 MHz 95 MHz 100 MHz 100 MHz 100 MHz	4.5x 5.0x 5.0x 5.0x 5.0x	2.0v 2.0v 2.0v 2.0v 2.0v	3.3v 3.3v 3.3v 3.3v 3.3v	Yes Yes Yes Yes Yes	Super 7 Super 7 Super 7 Super 7 Super 7	64 Kb 64 Kb 64 Kb 64 Kb 64 Kb	128 Kb 128 Kb 128 Kb 128 Kb 128 Kb
AMD K6-III+ series CPU, 2000
450 475 500	100 MHz 95 MHz 100 MHz	4.5x 5.0x 5.0x	2.0v 2.0v 2.0v	3.3v 3.3v 3.3v	Yes Yes Yes	Super 7 Super 7 Super 7	64 Kb 64 Kb 64 Kb	128 Kb 128 Kb 128 Kb
Via-Cyrix Via-SamuelII CPU,2000
CPU Type & Speed	Bus Speed	Clock Multi	Core V	I/O V	MMX	Socket Number	L1	L2
650 700 733 800	66,100,133 MHz 66,100,133 MHz 66,100,133 MHz 66,100,133 MHz					370 370 370 370	128 Kb 128 Kb 128 Kb 128 Kb	64K 64K 64K 64K
Via-Cyrix Via-Ezra CPU, 2000
750	266 MHz					370, A	128 Kb	128K
2nd Generation Intel 286 16bit series CPU, 1982
CPU Type & Speed	Bus Speed	Clock Multi	Core V	I/O V	MMX	Socket Number	L1	L2
8 10 12	8 MHz 10 MHz 12 MHz	1.0x 1.0x 1.0x	5.0v 5.0v 5.0v			Surface Mount Surface Mount Surface Mount
3rd Generation Intel 386SX/DX 32bit series CPU, 1985
16SX 20SX 25SX 33SX 16DX 20DX 25DX 33DX	16 MHz 20 MHz 25 MHz 33 MHz 16 MHz 20 MHz 25 MHz 33 MHz	1.0x 1.0x 1.0x 1.0x 1.0x 1.0x 1.0x 1.0x	5.0v 5.0v 5.0v 5.0v 5.0v 5.0v 5.0v 5.0v			Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
4th Generation Intel 486SX 16/32-bit series CPU, 1989
SX-16 SX-20 SX-25 SX-33 SX2-50 SX2-66	16 MHz 20 MHz 25 MHz 33 MHz * 25 MHz 33 MHz *	1.0x 1.0x 1.0x 1.0x 2.0x 2.0x	5.0v 5.0v 5.0v 5.0v 5.0v 5.0v			1,2,3 1,2,3 1,2,3 1,2,3 1,2,3 1,2,3	8 Kb 8 Kb 8 Kb 8 Kb 8 Kb 8 Kb
4th Generation Intel 486DX 32-bit series CPU, 1989
DX-25 DX-33 DX-50 DX2-50 DX2-66 DX4-75 DX4-100	25 MHz 33 MHz * 50 MHz 25 MHz 33 MHz * 40 MHz * 33 MHz *	1.0x 1.0x 1.0x 2.0x 2.0x 2.0x 3.0x	5.0v 5.0v 5.0v 5.0v 5.0v 5.0v 3.0v			1,2,3 1,2,3 1,2,3 1,2,3 1,2,3 3,6 3,6	8 Kb 8 Kb 8 Kb 8 Kb 8 Kb 8 Kb 8 Kb
5th Generation Intel P5-PentiumŽ CPU, 1993
60 66 75 90 100 120 133 150 166 200	60 MHz 60 MHz 50 MHz 60 MHz 50 MHz 60 MHz 66 MHz 60 MHz 66 MHz 66 MHz	1.0x 1.0x 1.5x 1.5x 2.0x 2.0x 2.0x 2.5x 2.5x 3.0x	5.0v 5.0v 3.3v 3.3v 3.3v 3.3v 3.3v 3.3v 3.3v 3.3v			7 7 7 7 7 7 7 7 7 7	16 Kb 16 Kb 16 Kb 16 Kb 16 Kb 16 Kb 16 Kb 16 Kb 16 Kb 16 Kb
Improved 5th Generation Intel P5-PentiumŽMMX series CPU, 1997
133 150 166 200 233	66 MHz 66 MHz 66 MHz 66 MHz 66 MHz				Yes Yes Yes Yes Yes	7 7 7 7 7	32 Kb 32 Kb 32 Kb 32 Kb 32 Kb
6th Generation Intel P6-PentiumŽPRO CPU, 1995
P6-150 P6-166 P6-180 P6-200	60 MHz 66 MHz 60 MHz 66 MHz	2.5x 2.5x 3.0x 3.0x	3.1v 3.1v 3.3v 3.3v		Yes Yes Yes Yes	8 8 8 8	16 Kb 16 Kb 16 Kb 16 Kb	256 Kb 256 Kb 256 Kb 256 Kb
6th Generation Intel P6-Pentium II Celeron series CPU,
266 300 333 366 400 433 466 500 533	66 MHz 66 MHz 66 MHz 66 MHz 66 MHz 66 MHz 66 MHz 66 MHz 66 MHz	4.0x 4.5x 5.0x 5.5x 6.0x 6.5x 7.0x 7.5x 8.0x	2.0v 2.0v 2.0v 2.0v 2.0v 2.0v 2.0v 2.0v 2.0v		Yes Yes Yes Yes Yes Yes Yes Yes Yes	Slot 1 Slot1,370 Slot1,370 Slot1,370 Slot1,370 Slot1,370 Slot1,370 Slot1,370 Slot1,370	32 Kb 32 Kb 32 Kb 32 Kb 32 Kb 32 Kb 32 Kb 32 Kb 32 Kb	128 Kb 128 Kb 128 Kb 128 Kb 128 Kb 128 Kb 128 Kb
6th Generation Intel P5-PentiumŽII Timna series CPU,
600	100 MHz	6.0x			Yes	370	32 Kb	128 Kb
6th Generation Intel P6-PentiumŽII Xeon series CPU, 1998
400 450	100 MHz 100 MHz	4.0x 4.5x	2.0v 2.0v	2.5v 2.7v	Yes Yes	Slot2 Slot2	32 Kb 32 Kb
6th Generation Intel P6-PentiumŽIII series CPU, 1999
450 500 550 600	100 MHz 100 MHz 100 MHz 100 MHz	4.5x 5.0x 5.5x 6.0x	2.0v 2.0v 2.0v 2.05v		Yes Yes Yes Yes	Slot1 Slot1 Slot1 Slot1	32 Kb 32 Kb 32 Kb 32 Kb
6th Generation Intel P6-Pentium III Celeron series CPU, 1999
533 566 600 633 66S7 700 750 800 850	66 MHz 66 MHz 66 MHz 66 MHz 66 MHz 66 MHz 100 MHz 100 MHz 100 MHz	8.0x 8.5x 9.0x 9.5x 10.0x 10.5x 7.5x 8.0x 8.5x	1.5v 1.5v 1.5v 1.65v		Yes Yes Yes Yes Yes Yes Yes Yes Yes	Slot 1 Slot1,370 Slot1,370 Slot1,370 Slot1,370 Slot1,370 Slot1,370 Slot1,370 Slot1,370	32 Kb 32 Kb 32 Kb 32 Kb 32 Kb 32 Kb 32 Kb 32 Kb 32 Kb	128 Kb 128 Kb 128 Kb 128 Kb 128 Kb 128 Kb 128 Kb 128 Kb 128 Kb
6th Generation Intel P6-PentiumŽIII Xeon series CPU, 1999
500 550 600 667 700 733 800 866 900 933 1G	100 MHz 100 MHz 133 MHz 133 MHz 100 MHz 133 MHz 133 MHz 133 MHz 100 MHz 133 MHz 133 MHz	5.0x 5.5x 4.5x 5.0x 7.0x 5.5x 6.6x 6.5x 9.0x 7.0x 7.5x	2.0v 2.0v 2.8v 2.8v 2.8v 2.8v 2.8v 2.8v 2.8v 2.8v 2.8v	2.0v 2.0v	Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes	Slot2 Slot2 Slot2 Slot2 Slot2 Slot2 Slot2 Slot2 Slot2 Slot2 Slot2	32 Kb 32 Kb 32 Kb 32 Kb 32 Kb 32 Kb 32 Kb 32 Kb 32 Kb 32 Kb 32 Kb	256 Kb
6th Generation Intel P6-Pentium III Tualatin series CPU,
1133 1266	133 MHz 133 MHz	8.0x 8.5x			Yes Yes			512 Kb 512 Kb
* Note: If you have intermittent problems check that the ISA bus Clock is near 8 MHz. The divider is in the Advanced CMOS setup. For bus Speeds of 33 MHz select Clock/4. For bus Speeds of 40 MHz select Clock/5.

Central Processing Units, Voltages, Technical Specifications