Processor upgrade results for Cyrix .

As at 10/8/2000

 

No posted updates at this time.

Processor

Rating

@

Overclocked speed

Front Side Bus

X

Multiplier

Voltage

Upgraded from

Rating

Stable?

Survey entries

IBM / CYRIX

Cyrix / IBM 686

150

@

200/ 190ish

75

X

2

VARIES 3-3.3

Intel Pentium

100

YES (note 3)

1

Cyrix / IBM 686

150

@

200 / 190

75

X

2.5

2.8

Cyrix / IBM 686

150

YES

1

Cyrix / IBM 686

150

@

200

66

X

3.5 (1.5)

3,5

Cyrix / IBM 686

150

YES

1

Cyrix / IBM M2

150

@

166 (PR233)

83

X

2

2.9

Cyrix / IBM M2

PR200

YES

1

Cyrix / IBM 686

200

@

166

75

X

2

2.9

Intel Pentium

100

NO

1

Cyrix / IBM M2

200

@

262.5(PR333?)

75

X

3.5 (1.5)

3.2

Cyrix / IBM 686

300

YES

1

Cyrix / IBM M2

233

@

300

75

X

3.5 (1.5)

3.2

Intel Pentium

166

YES

1

Cyrix / IBM M2

266

@

210

60

X

3.5 (1.5)

2.9

Cyrix / IBM 686

200

YES (note 2)

1

Cyrix / IBM M2

300

@

PR450

83

X

3.5 (1.5)

3.3

Intel Pentium MMX,

166

YES

1

Cyrix / IBM M2

PR333

@

262.5(PR333)

75

X

3.5 (1.5)

2.9

Intel Pentium MMX,

200

YES (Note 1)

1

Note 1 - " This MII-333 is the "2.9V 75 MHz 3.5x" type. Once we managed to keep it cool enough, it was stable."

note 2 - "I am using CyrixM2PR300.@core2.9V I buy it 3500 Japanese yen. 60x3.5 is stable. 60x3 is stable. 66x3.5 is unstable 66x3 is also unstable 75x3.5 unstable 75x3.5 unstable My M/B seem to be unstable over 66Mhz bus clock. "

Note 3 - " i fried a cyrix m2 300!* set bus 83 multipied3.5=300ish the above configuration was rock solid ,but experiments overclocking have steadily pushed up volts this £2 chip is on the way out...fair success at 83 buss 3x multiplier benchmarked 225+ 75 mhz pentium fairly stable 1.5x/75 aprox. 120"

 

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