PROCESSOR SETTINGS


Intel/AMD/Cyrix 4x86, AMD/Cyrix 5x86, AMD/Cyrix 6x86, Intel Celeron, Pentium, II, III, AMD K5, K6, K6-2, K6-3 & K7

Processor Rating Bus
(MHz)
CPU Core
(MHz)
Clock
Multiplier
Core Voltage

Pentium Socket 7 (P54C & P55C MMX)

Pentium75 MHz 50 50
Pentium90 MHz 50 1.5x
Pentium 100 MHz 100 1.5x

On top of CPU

Pentium 120 MHz 60 120 2x

On top of CPU

Pentium 133 MHz 66 133 2x

On top of CPU

Pentium 150 MHz 60 150 2.5x

On top of CPU

Pentium 166 MHz 66 166 2.5x

On top of CPU

Pentium 200 MHz 66 200 3x

On top of CPU

Pentium 166MMX-PR166 66 166 2.5x (2.8Vcore)
Pentium 200MMX-PR200 66 200 3x (2.8Vcore)
Pentium 233MMX-PR233 66 231 3x5 (2.8Vcore)

Pentium II

Pentium II 233  512k 66 233 3.5x
Pentium II 266  512k 66 266 4x
Pentium II 300 512k 100 300 3x
Pentium II 333 512k 66 333 5x
Pentium II 350 512k 100 350 3.5x
Pentium II 400 512k 100 400 4x
Pentium II 450 512k 100 400 4.5x

Pentium III

Pentium III 450 512k 100 450 4.5x
Pentium III 500 512k 100 500 5x
Pentium III 550 512k 100 550 5.5x
Pentium III 600 512k 100 600 6x
Pentium III 7 512k

  (Socket 1 & 370 

Intel Celeron 300 128k (Slot1/PPGA) 66 297 4.5x
Intel® Celeron 333 128k (Slot1/PPGA) 66 330 5x
Intel® Celeron 366 128k (Slot1/PPGA) 66 363 5.5x
Intel® Celeron 400 128k (Slot1/PPGA) 66 396 6x
Intel® Celeron 433 128k (Slot1/PPGA) 66 429 6.5x
Intel® Celeron 466 128k (Slot1/PPGA) 66 462
Intel® Celeron 500 128k (Slot1/PPGA) 66 495 7.5
Processor Rating Bus
(MHz)
CPU Core
(MHz)
Clock
Multiplier
Core Voltage

AMD K5

AMD K5 PR75 50 75   MHz 1.5x
AMD K5 PR90 60 90 MHz 1.5x
AMD K5 PR100 66 100 MHz 1.5x
AMD K5 PR120 60 90 MHz 1.5x
AMD K5 PR120 50 75 MHz 1.5x
AMD K5 PR133 66 100 MHz 1.5x
AMD K5 PR166 66 166 MHz 2.5
AMD K5 PR200 66 200 MHz 3x

AMD K6

AMD K6 166 66 166MHz 2.5x
AMD K6 200 66 200MHz
AMD K6 233 66 233MHz 3.5x

AMD K6-2

AMD K6-2 350 100 350 3.5 2.2
AMD K6-2 380 95 380 4.0 2.2
AMD K6-2 400 100 400 4.0 2.2
AMD K6-2 450 100 450 4.5 2.4 or 2.2 Check on top of CPU
AMD K6-2 475 95 475 5 2.4
AMD K6-3 400 100 400 4 2.4
AMD K6-3 450 100 450 4.5 2.4

AMD K7

Processor Rating Bus
(MHz)
CPU Core
(MHz)
Clock
Multiplier
Core Voltage

Cyrix / IBM 6x86   M1

Cyrix / IBM P120+ 50 100MHz 2.x On top of CPU
Cyrix / IBM P133+ 55 110 2.x On top of CPU
Cyrix / IBM P150+ 60 120 2.x On top of CPU
Cyrix / IBM P166+ 66 133 2.x On top of CPU
Cyrix / IBM 6x86MX  M2
Cyrix / IBM PR133 50 100 2.x On top of CPU
Cyrix / IBM PR133 55 110 2.x On top of CPU
Cyrix / IBM PR150 60 120 2.x On top of CPU
Cyrix / IBM PR150 50 125 2.5x On top of CPU
Cyrix / IBM PR166 66 133 2.x On top of CPU
Cyrix / IBM PR166 55 138 2.5x On top of CPU
Cyrix / IBM PR166 50 150 3.x On top of CPU
Cyrix / IBM PR166 60 150 2.5x On top of CPU
Cyrix / IBM PR200 75 150 2.x On top of CPU
Cyrix / IBM PR200 55 165 3.x On top of CPU
Cyrix / IBM PR200 66 166 2.5x On top of CPU
Cyrix / IBM PR200 60 180 3.x On top of CPU
Cyrix / IBM PR233 75 188 2.5x On top of CPU
Cyrix / IBM PR233 66 200 3.x On top of CPU
Cyrix / IBM PR266 66 233 3.5x On top of CPU
Cyrix / IBM  PR266 75 225 3.x On top of CPU
Cyrix M2 P300 MX 66 / 75 3.5 / 3.0 2.9
Cyrix M2 P333 MX 66 / 75 / 83 4.0 / 3.5 / 3.0 2.9
   

 

Processor Family

Processor Version

External or I/O Voltage (V)

Internal or Core Voltage (V)

Power Management

8088

All

5

None

8086

All

5

None

80286

All

5

None

80386DX

All

5

None

80386SX

All

5

SMM on 80386SL only

80486DX

All

5

SMM in SL-enhanced versions

80486SX

All

5

SMM in SL-enhanced versions

80486DX2

Intel

5

SMM in SL-enhanced versions

AMD, Cyrix

3.3 (5V tolerant)

SMM

80486DX4

Intel

3.3

SMM

80486DX4

AMD, Cyrix

3.3 (5V tolerant)

SMM

AMD 5x86

--

3.45

SMM

Cyrix 5x86

All

3.45

SMM

brand CPU name-
rated speed
internal speed
[Mhz]
multiplier clock (mem bus)
[Mhz]
Intel/AMD/Cyrix 486 Class 486DX2-66 66 2x 33
  486DX2-80 80 2x 40
  Cx486DX4-75 75 3x 25
  486DX4-100 100 3x 33
AMD Enhanced 486 Class 486DX4-120 120 3x 40
  486DX4-120 100 2x 50
Intel Pentium® Pentium®-75 75 1.5x 50
  Pentium®-90 90 1.5x 60
AMD 5x86 Amd5x86-133 133 4x 33
(3.45Vcore) Amd5x86-133 160 4x 40
  Amd5x86-133 150 3x 50