Need help with overclocking

[sjobban]

Bought a Celeron 667MHz and a Abit slotket to my Abit BH6 motherboard and my intention was overclocking. But no luck. At 100MHz FSB I get a black screen and I can't even get in to the bios, I have to break the power off and wait 30 minutes before I can try again and get in the bios. At 75 or 83MHz FSB I get a message Cpu is unworkable or has been changed please recheck cpu soft menu.
I have tried to set the slotket on auto frequency settings and at 100MHz and the same with the voltage settings, auto or 1,65-1,85V but with the same result. The only thing that works is 667MHz.
Is there someone out there who can give me a tip I would really appreciate that
sjobban

[Tim-]

Disabling the "speed error hold" mode in the bios will eliminate the error message you see.

The high multiplier in the 667 doesn't make it a great choice for overclocking. What cooling are you using? Any case cooling?

I would expect it to run successfully at 75 FSB, and probably 83 with a possible increase in Vcore- 100 may be tough- not a lot of them will go to 1GHz. You will have to have VERY good cooling to succeed, if the chip is cooperative.

By holding down the "insert" key while rebooting you should be able to go to the motherboard's "safe settings" without having to wait for a long period.

[batboy]

Tim's right, disable the speed error. He's also right that not a lot of C-667 will do the 100 MHz boogie. I played around with a buddy's C-667 a couple months ago, with just a retail fan and heatsink (and open case), it did 75 and 83 MHz no problem, but would not even post at 100 MHz. I think all the Cellies will run at least 75 bus.

[sjobban]

Tim- (Feb 12, 2001 05:23 p.m.):
Disabling the "speed error hold" mode in the bios will eliminate the error message you see.

The high multiplier in the 667 doesn't make it a great choice for overclocking. What cooling are you using? Any case cooling?

I would expect it to run successfully at 75 FSB, and probably 83 with a possible increase in Vcore- 100 may be tough- not a lot of them will go to 1GHz. You will have to have VERY good cooling to succeed, if the chip is cooperative.

By holding down the "insert" key while rebooting you should be able to go to the motherboard's "safe settings" without having to wait for a long period.

Thank you for the tip. I disabled the speed error hold and set 83MHz FSB,
1.75V and sucess it's running 833MHz. About cooling I use a Fop 32
and a case fan but right now my case is open and the temperature is 25 C
Thanks again
sjobban