CPU Type

25Mhz

33Mhz

40Mhz

50Mhz

INTEL

SX25

DX2-50

DX4-75

SX33

DX33

DX2-66

DX4-100

DX50

AMD

DX2-66

DX4-100

5X86-133

DX40

DX2-80

DX4-120

Cyrix

IBM

TI

DX2-66

DX4-100

5X86-100

DX2-80

DX4-120

Clock Speed

Internal Clock

Clock Multiplier

CPU

75

50

1.5

Intel P75

AMD 5K86-PR75

90

60

1.5

Intel P90

AMD 5K86-PR90

100

66.6

1.5

INTEL P100

AMD 5K86-PR100

100

50

2

Cyrix/IBM/TI/ST

6X86-P120+ 100Mhz

110

55

2

Cyrix/IBM/TI/ST

6X86-P133+ 110Mhz

120

60

2

Intel P120-120Mhz

133

60

1.5

AMD 5K86-PR133

133

66.6

2

Intel P133

150

60

2

Cyrix/IBM/TI/ST

6X86-P150+ 120Mhz

150

60

2.5

Intel P150

166

66.6

2

Cyrix/IBM/TI/ST

6X86-P166+ 133Mhz

166

66.6

2.5

Intel P166

AMD 5K86-PR166

AMD K6-PR166 (2.9V)

180

60

3

Intel P180

200

75

2

Cyrix/IBM/TI/ST

6X86-P200+ 150Mhz

200

66.6

3

Intel P200

AMD K6-PR200 (2.9V)

233

66.6

3.5

Intel P233

AMD K6-PR233 (3.2V)

233

75

2.5

Cyrix M2-233

266

83

2.5

Cyrix M2-266

266

66.6

4

AMD K6-266

AMD K6-2-266

(2.2V)

300

66.6

4.5

AMD K6-300

300

66.6

3.5

Cyrix M2-300

300

100

3

AMD K6-2-300

(2.2V)

333

95

3.5

AMD K6-2-333

(2.2V)

350

100

3.5

AMD K6-2-350

(2.2V)

Clock Speed

Internal Clock

Clock Multiplier

CPU

150

60

2.5

Intel Pentium PRO 150 (3.1V)

166

66.6

2.5

Intel Pentium PRO 166 (phase out)

180

60

3

Intel Pentium PRO 180 (3.3V)

200

66.6

3

Intel Pentium PRO 200 (3.3V)

Clock Speed

Internal Clock

Clock Multiplier

CPU

233

66.6

3.5

Intel Pentium II 233

266

66.6

4

Intel Pentium II 266

300

66.6

4.5

Intel Pentium II 300

333

66.6

5

Intel Pentium II 333

350

100

3.5

Intel Pentium II 350

400

100

4

Intel Pentium II 400