Weird overclocking problem?

[DragonFire]

I think the basics will work for this question...

MB=Asus AV7133 (lastest bios)
T-Bird 1GHz@1388Mhz (AXHA code)
Cooling-FOP38 with Artic Silver 2
Voltage=1.70 will do 1.65 but IE6 crashs here and there.

Heres the problem, right now I'm running at full load (RC5) and my cpu temp is 41c (105F) and its 100% stable. If I start my computer up at 1.4Ghz, windows loads and everything is fine intill I start RC5. Once my temps reaches 41-43c (105-107F) my computer restarts. It doesnt crash, just restarts and loads windows again as if the power went out and everything is fine intill I start rc5 again. Now this sounds like a heat issuse but why would it work at 1388 at 41c but restart at 1400 at 41c? same temp and its only a 12mhz increase. Ideas?

oh yeah! yes, I have tried to up the voltage to 1.75 and 1.80 without luck and at 1.75 and 1.80 there is a chance my computer will restart at 1388 and I end up backing down to 1360.

 

[gimps]

Possibility that your CPU is maxed at 1388.
Or, try stepping down the FSB and increasing the multiplier to get 1400 and see what it does.

 

[rogue1979]

I had a similar problem, it was my 300-watt power supply. Had to add a second power supply, above 1300MHz their wasn't enough juice.

 

[AvidOC]

hey guys i have a 235watt powersupply with a 1ghz T-Bird @ 1130 and i can run it at 1.85volts
i have a geforce2 Pro
2 HD's
12x10x32 CDR + CDRW
52x CD-ROM
12x DVD drive
and three PCI cards installed and its fine! no crashes no matter what i do im really suprised at this!!