P2b Overclocking Question 766/66 @ 100 ?

[Bob]

I've been looking at inexpensive upgrades for some P2B boards. Since
these boards are really dated, I'm looking to minimize any additional
investment in them - but if I can strap them along for a bit longer
that would be very helpful.

So, specific questions...I'm wondering about using a 766@66 Celeron
processor and cranking it up. If I can go to 100mhz, I hit 1150.
Since it's a 1.7v processor, I'm hoping that I can use a cheap slocket
and run it stock at 1.8v, just a bit beyond the 1.7v or 1.75 volt
speck. I won't need to exceed 100mhz on the bus and the PCI will be
stock.

Am I nuts ? Will this work ? Any pointers to summary sites where folks
have tried to OC this CPU (and others too)?

Thanks,

 

[Stephan Grossklass]

I've been looking at inexpensive upgrades for some P2B boards. Since
these boards are really dated, I'm looking to minimize any additional
investment in them - but if I can strap them along for a bit longer
that would be very helpful.

So, specific questions...I'm wondering about using a 766@66 Celeron
processor and cranking it up. If I can go to 100mhz, I hit 1150.
Since it's a 1.7v processor,

.... I'd have my doubts there. 1.7 volts means cC0 stepping, and those
can hit a bit over 1000 MHz, but usually don't get too far beyond 1100.

I'm hoping that I can use a cheap slocket
and run it stock at 1.8v, just a bit beyond the 1.7v or 1.75 volt
speck. I won't need to exceed 100mhz on the bus and the PCI will be
stock.

Some people have indeed managed to reach 1150 or more at 1.80 V, but I
wouldn't rely on it:
http://www.cpudatabase.com/CPUdb/

Stephan

 

[cleurs]

I've been looking at inexpensive upgrades for some P2B boards. Since
these boards are really dated, I'm looking to minimize any additional
investment in them - but if I can strap them along for a bit longer
that would be very helpful.

So, specific questions...I'm wondering about using a 766@66 Celeron
processor and cranking it up. If I can go to 100mhz, I hit 1150.
Since it's a 1.7v processor, I'm hoping that I can use a cheap slocket
and run it stock at 1.8v, just a bit beyond the 1.7v or 1.75 volt
speck. I won't need to exceed 100mhz on the bus and the PCI will be
stock.

Am I nuts ? Will this work ? Any pointers to summary sites where folks
have tried to OC this CPU (and others too)?

Thanks,

My P2B-F does. I bought it with a 400 MHz Celeron five years ago. Nowadays
it's running with a 1000MHz Coppermine Celeron in an appropriate slocket
as my Linux internet gateway. I can raise the FSB to 120 MHz
without a problem, so my Celery runs happily at 1200 MHz. Make sure the
latest BIOS supports Coppermine or even better, Tualatin chips. Beware
that many people experienced troubles with CPU multipliers >10...

Cheers,
Chris

 

[Bob]

My P2B-F does. I bought it with a 400 MHz Celeron five years ago. Nowadays
it's running with a 1000MHz Coppermine Celeron in an appropriate slocket
as my Linux internet gateway.

Hummm. I though Linux had to run on an old 486 just to set an
example.

I can raise the FSB to 120 MHz
without a problem, so my Celery runs happily at 1200 MHz. Make sure the
latest BIOS supports Coppermine or even better, Tualatin chips. Beware
that many people experienced troubles with CPU multipliers >10...

Are you saying that the CPU's with multipliers of 10x & higher are
more trouble to overclock than a slightly lower multiplier CPU ?

Thanks,

 

[cleurs]

Hummm. I though Linux had to run on an old 486 just to set an
example.

Well, it replaced an "antique" P75 if that's alright ;-) Now I can run
even a nice workable X-server!

Are you saying that the CPU's with multipliers of 10x & higher are more
trouble to overclock than a slightly lower multiplier CPU ?

According to Anand, it's not a multiplier issue
http://www.anandtech.com/guides/viewfaq.html?i=85
although my P2B-F did't want to run the 1.1GHz chip. 1GHz is alright with
my board.

HTH
Chris

 

[Stephan Grossklass]

although my P2B-F did't want to run the 1.1GHz chip. 1GHz is alright with
my board.

The 10x multiplier bug is fixed in BIOS 1014 beta 3. I bet you had an
earlier one at the time, or maybe still have.

Stephan