CPU Types and Specifications

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AMD CPU Specifications
AMD-K5
CPU	Bus Speed	Clock Multiplier	Voltage	I/O Voltage
PR-75	50 MHz	x 1.5	3.52 V	N/A
PR-90	60 MHz	x 1.5	3.52 V	N/A
PR-100	66 MHz	x 1.5	3.52 V	N/A
PR-120	60 MHz	x 1.5	3.52 V	N/A
PR-133	66 MHz	x 1.5	3.52 V	N/A
PR-166	66 MHz	x 1.75	3.52 V	N/A
L1 Cache: 16 KB instruction, 8 KB data
AMD-K6
CPU	Bus Speed	Clock Multiplier	Core Voltage	I/O Voltage
PR2-166	66 MHz	x 2.5	2.9 V	3.3 V
PR2-200	66 MHz	x 3	2.9 V	3.3 V
PR2-233	66 MHz	x 3.5	2.9 V or 3.2 V	3.3 V
PR2-266	66 MHz	x 4	2.2 V	3.3 V
PR2-300	66 MHz	x 4.5	2.2 V	3.3 V
L1 Cache: 32 KB instruction, 32 KB data
AMD-K6-2
CPU	Bus Speed	Clock Multiplier	Core Voltage	I/O Voltage
266	66 MHz	x 4	2.2 V	3.3 V
300	100 MHz	x 3	2.2 V	3.3 V
333	95 MHz	x 3.5	2.2 V	3.3 V
350	100 MHz	x 3.5	2.2 V	3.3 V
380	95 MHz	x 4	2.2 V	3.3 V
400	100 MHz	x 4	2.2 V	3.3 V
450	100 MHz	x 4.5	2.4 V	3.3 V
475	95 MHz	x 5	2.4 V	3.3 V
500	100 MHz	x 5	2.4 V	3.3 V
533	97 MHz	x 5.5	2.2 V	3.3 V
550	100 MHz	x 5.5	2.4 V	3.3 V
L1 Cache: 64 KB
AMD-K6-III
CPU	Bus Speed	Clock Multiplier	Core Voltage	I/O Voltage
400	100 MHz	x 4	2.45 V	3.3 V
450	100 MHz	x 4.5	2.45 V	3.3 V
L1 Cache: 64 KB L2 Cache: 256 KB full-speed
AMD-K7 or Athlon
CPU	Bus Speed	Clock Multiplier	Core Voltage	I/O Voltage
500 (1/2 speed L2)	200 MHz	x 5	1.6 V	3.3 V
550 (1/2 speed L2)	200 MHz	x 5.5	1.6 V	3.3 V
600 (1/2 speed L2)	200 MHz	x 6	1.6 V	3.3 V
650 (1/2 speed L2)	200 MHz	x 6.5	1.6 V	3.3 V
700 (1/2 speed L2)	200 MHz	x 7	1.6 V	3.3 V
750 (2/5 speed L2)	200 MHz	x 7.5	1.6 V	3.3 V
800 (2/5 speed L2)	200 MHz	x 8	1.6 V	3.3 V
850 (2/5 speed L2)	200 MHz	x 8.5	1.6 V	3.3 V
900 (1/3 speed L2)	200 MHz	x 9	1.65 V	3.3 V
950 (1/3 speed L2)	200 MHz	x 9.5	1.65 V	3.3 V
1000 (1/3 speed L2)	200 MHz	x 10	1.65 V	3.3 V
L1 Cache: 128 KB L2 Cache: 512 KB
AMD Athlon "Thunderbird"
700	200 MHz	x 7	1.6 V	3.3 V
750	200 MHz	x 7.5	1.6 V	3.3 V
800	200 MHz	x 8	1.6 V	3.3 V
850	200 MHz	x 8.5	1.6 V	3.3 V
900	200 MHz	x 9	1.65 V	3.3 V
L1 Cache: 128 KB L2 Cache: 256 KB processor speed
AMD Duron
600	200 MHz	x 6	1.6 V	3.3 V
650	200 MHz	x 6.5	1.6 V	3.3 V
700	200 MHz	x 7	1.6 V	3.3 V
750	200 MHz	x 7.5	1.6 V	3.3 V
800	200 MHz	x 8	1.6 V	3.3 V
L1 Cache: 128 KB L2 Cache: 64 KB processor speed

Intel CPU Specifications
Intel Celeron
CPU	Bus Speed	Clock Multiplier	Voltage	I/O Voltage
266 (0 KB)	66 MHz	x 4	2.8 V	N/A
300 (0 KB)	66 MHz	x 4.5	2.0 V	N/A
300A (128 KB)	66 MHz	x 4.5	2.0 V	N/A
333 (128 KB)	66 MHz	x 5	2.0 V	N/A
366 (128 KB)	66 MHz	x 5.5	2.0 V	N/A
400 (128 KB)	66 MHz	x 6	2.0 V	N/A
433 (128 KB)	66 MHz	x 6.5	2.0 V	N/A
466 (128 KB)	66 MHz	x 7	2.0 V	N/A
500 (128 KB)	66 MHz	x 7.5	2.0 V	N/A
533 (128 KB)	66 MHz	x 8	2.0 V	N/A
FC-PGA 533A (128 KB)	66 MHz	x 8	1.5 V	N/A
FC-PGA 566 (128 KB)	66 MHz	x 8.5	1.5 V	N/A
FC-PGA 600 (128 KB)	66 MHz	x 9	1.5 V	N/A
L1 Cache: 32 KB (non-blocking) L2 Cache: 128 KB full-speed
Intel Pentium (P54C)
CPU	Bus Speed	Clock Multiplier	Voltage	I/O Voltage
75	50 MHz	x 1.5	3.3 V	N/A
90	60 MHz	x 1.5	3.3 V	N/A
100	66 MHz	x 1.5	3.3 V	N/A
120	60 MHz	x 2	3.3 V	N/A
133	66 MHz	x 2	3.3 V	N/A
150	60 MHz	x 2.5	3.3 V	N/A
166	66 MHz	x 2.5	3.3 V	N/A
200	66 MHz	x 3	3.3 V	N/A
L1 Cache: 8 KB instruction, 8 KB data
Intel Pentium MMX (P55C)
CPU	Bus Speed	Clock Multiplier	Core Voltage	I/O Voltage
166 MMX	66 MHz	x 2.5	2.8 V	3.3 V
200 MMX	66 MHz	x 3	2.8 V	3.3 V
233 MMX	66 MHz	x 3.5	2.8 V	3.3 V
L1 Cache: 8 KB instruction, 8 KB data
Intel Pentium Pro
CPU	Bus Speed	Clock Multiplier	Voltage	I/O Voltage
150 (256 KB)	60 MHz	x 2.5	3.1 V	N/A
166 (512 KB)	66 MHz	x 2.5	3.3 V	N/A
200 (256 KB)	66 MHz	x 3	3.3 V	N/A
L1 Cache: 8 KB instruction, 8 KB data L2 Cache: Various sizes, full-speed
Intel Pentium II
CPU	Bus Speed	Clock Multiplier	Voltage	I/O Voltage
233	66 MHz	x 3.5	2.8 V	N/A
266	66 MHz	x 4	2.8 V	N/A
300	66 MHz	x 4.5	2.8 V	N/A
333	66 MHz	x 5	2.0 V	N/A
350	100 MHz	x 3.5	2.0 V	N/A
400	100 MHz	x 4	2.0 V	N/A
450	100 MHz	x 4.5	2.0 V	N/A
L1 Cache: 16 KB instruction, 16 KB data L2 Cache: 512 KB Pipeline Burst at half processor speed
Intel Pentium III
CPU	Bus Speed	Clock Multiplier	Voltage	I/O Voltage
450	100 MHz	x 4.5	2.0 V	N/A
500	100 MHz	x 5	2.0 V	N/A
550	100 MHz	x 5.5	2.0 V	N/A
600	100 MHz	x 6	2.05 V	N/A
L1 Cache: 16 KB instruction, 16 KB data L2 Cache: 512 KB Pipeline Burst at half processor speed
Intel Pentium III B
CPU	Bus Speed	Clock Multiplier	Voltage	I/O Voltage
533	133 MHz	x 4	2.0 V	N/A
600	133 MHz	x 4.5	2.05 V	N/A
L1 Cache: 16 KB instruction, 16 KB data L2 Cache: 512 KB Pipeline Burst at half processor speed
Intel Pentium III E
CPU	Bus Speed	Clock Multiplier	Voltage	I/O Voltage
500 FC-PGA	100 MHz	x 5	1.6 V	N/A
550 FC-PGA	100 MHz	x 5.5	1.6 V	N/A
600 SECC II	100 MHz	x 6	1.65 V	N/A
650 SECC II	100 MHz	x 6.5	1.65 V	N/A
700 SECC II	100 MHz	x 7	1.65 V	N/A
750 SECC II	100 MHz	x 7.5	1.65 V	N/A
800 SECC II	100 MHz	x 8	1.65 V	N/A
850 SECC II	100 MHz	x 8.5	1.65 V	N/A
900 SECC II	100 MHz	x 9	1.65 V	N/A
950 SECC II	100 MHz	x 9.5	1.65 V	N/A
1000 SECC II	100 MHz	x 10	1.65 V	N/A
L1 Cache: 16 KB instruction, 16 KB data L2 Cache: 256 KB on-die full speed
Intel Pentium III EB
CPU	Bus Speed	Clock Multiplier	Voltage	I/O Voltage
600	133 MHz	x 4.5	1.65 V	N/A
667	133 MHz	x 5	1.65 V	N/A
733	133 MHz	x 5.5	1.65 V	N/A
800	133 MHz	x 6	1.65 V	N/A
866	133 MHz	x 6.5	1.65 V	N/A
L1 Cache: 16 KB instruction, 16 KB data L2 Cache: 256 KB on-die full speed

Intel Processor Specifications - Older CPUs
Processor	Internal Register Size	Data Bus Width	Address Bus Width	Integral Cache	Integral FPU *	Maximum Memory	No. of Transistors	Date Introduced
8088 8086 286 386 SX 386 SL 386 DX 486 SX 487 SX 486 DX 486 SL 486 DX2 Pentium	16-bit 16-bit 16-bit 32-bit 32-bit 32-bit 32-bit 32-bit 32-bit 32-bit 32-bit 32-bit	8-bit 16-bit 16-bit 16-bit 16-bit 32-bit 32-bit 32-bit 32-bit 32-bit 32-bit 64-bit	20-bit 20-bit 24-bit 24-bit 24-bit 32-bit 32-bit 32-bit 32-bit 32-bit 32-bit 32-bit	- - - - 0 KB - 8 KB 8 KB 8 KB 8 KB 8 KB 2 X 8 KB	- - - - - - - Yes Yes Optional Yes Yes	1 MB 1 MB 16 MB 16 MB 16 MB 4 GB 4 GB 4 GB 4 GB 4 GB 4 GB 4 GB	29,000 29,000 130,000 275,000 855,000 275,000 1,185,000 1,200,000 1,200,000 1,400,000 1,100,000 3,100,000	Jun. '79 Jun. '78 Feb '82 Jun. '88 Oct. '90 Oct. '85 Apr. '91 Apr. '91 Apr. '89 Nov. '92 Mar. '92 May. '93
The 386 SL contains an integral cache controller; however, cache memory is external to the chip. * FPU=Floating Point Unit (Math Coprocessor)

IBM Processor Specifications - Older CPUs
Processor	Internal Register Size	Data Bus Width	Address Bus Width	Integral Cache	Integral FPU *	Maximum Memory	No. of Transistors	Date Introduced
386 SLC 486 SLC 486 SLC2 486 BL2 486 BL3	32-bit 32-bit 32-bit 32-bit 32-bit	16-bit 16-bit 16-bit 32-bit 32-bit	24-bit 24-bit 24-bit 32-bit 32-bit	8 KB 16 KB 16 KB 16 KB 16 KB	No No No No No	16 MB 16 MB 16 MB 4 GB 4 GB	N/A N/A N/A N/A N/A	Oct. '91 1992 Jun. '92 1992 1992
* FPU=Floating Point Unit (Math Coprocessor)

Geek.com - ChipGeek - Need CPU Specs, this is the place to go!
CPU Database - techPowerUp - A reference table of the most current processors around today
CPU References - Chris Hare - Another excellent source
AMD Processor Comparison Chart - Desktop | Notebook
Intel Processor Comparison Chart - Desktop | Notebook

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