Celeron 633 overclocking question

[alcatrazz]

hi:

i got my celeron 633 to hit 950 @ 1.95 volts. it's the retail cB0 stepping that i bought from buy.com. i can run regular programs and games (quake III) without problems, but when i run the prime95 torture test, it stops because of a "hardware error". is this most likely b/c of excess heat, or is it b/c my processor just isn't 100% stable at that speed. will arctic silver help?

i have a GORB w/ radio shack thermal grease attached to the celeron. i'm only running 100 mhz FSB (i had a PIII on there before running @ 124 FSB) so i'm assuming my DFI motherboard isn't the problem, and i have 2 64 MB sticks of PC100 and PC133 ram.

thanks for the help.

 

[atomicbomberman]

if your chip needs 1.95v to run at 100fsb stable, then it's probably a dud, not worth ocing.

 

[alcatrazz]

thanks for the input. btw, i'm using the msi master slotket and this is my second celeron 633 cB0 chip (both retail). the first wouldn't even boot into windows @ 1.95v. is it possible it's my mobo/some other component or is my luck just bad and i got stuck with 2 dud chips? from what i've been reading, it seems like people have been having decent success with the celeron 633. any more advice?

 

[Blayze]

not sure about your chip but Im using a 633 celeron I got from buy.com and its running at 950mhz 1.75v @ 40C full load using RC5.
the motherboard I am using is a Abit VH6

 

[alcatrazz]

Blayze, is that a cC0 stepping or a cB0 stepping? thanks

 

[Blayze]

its a cB0

 

[JimMc]

<<i can run regular programs and games (quake III) without problems, but when i run the prime95 torture test, it stops because of a &quot;hardware error&quot;>>

Quit running it. Your CPU is not 100% stable, but if it doesn't prevent you from doing what you want to do on it, who cares?

You could try running RC5 for a while and see how your CPU handles that, perhaps your system simply doesn't like prime95. You can get RC5 info here Paulson's Tutorial and here TeamAnandTech Homepage. If you have any questions, check out the Distributed Computing Forum, it's full of Elite Members and high powered geeks that LOVE to help TA guys!

 

[Blayze]

as JimMc said try RC5 I thought that the system was stable until I started running RC5 on it and then it required me to up the voltage to 1.75 to make it 100% stable.

-Blayze

 

[ElectricLegs]

Heat dissipation is a problem on the 633s too. Just because you have a good heatsink doesn't mean it's actually able to pull the heat fron the cpu. Most of the celerons I've played with have a curved surface giving very little contact area. At 1.95 vts heat will build quick. You can use some wet/dry 600 grit and slowly/lightly flatten the surface but this will void the warranty. Hold them together to see where the light comes through. Also put about a nickel's sized amount of grease the increase the heat transfer. Instead of fixing this chip I'd send it back as defective and try another if it needs that much voltage.
What M/b?
What Slocket settings?