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CPU Types and Specifications

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| AMD CPU Specs | Intel CPU Specs | Older Intel CPU Specs | Older IBM CPU Specs | Useful Links|

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)




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