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PC locks shortly after 3D starts

C

C-Otto

Weaksauce
Joined
Oct 26, 2004
Messages
95
Hello!

I did overclock my CPU, but not my graphics card. Due to the AGP lock (Abit AV8) I think the graphics card should not even care what has been changed.

Nevertheless, about 10 seconds (!) after I start any 3D application (Quake3, glxgears, ...) the PC freezes (X uses 100% cpu, when I kill it everything hangs).
This only happens when I overclock my CPU drasticly, 2200@2500 at the moment.

Please tell me what could cause this strange behaviour.

short hardware summary:
Athlon64 3500+ Winchester S939 running at 2500MHz (1.55V) on Abit AV8, watercooled
Geforce 4600 is cooled via Zalman ZM80C-HP with ZM-OP1
RAM is running with 227MHz, Infineon DDR 400 (2x 1024MB)
system is running linux 2.6.10 (gentoo, 64bit)

Thanks,
 
I'd like to add:
The system is 100% stable in non-overclocked mode (e.g. played through doom3 without a lock).
Without touching 3D I can benchmark the CPU for at least several hours, even with 2500MHz.
 
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