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Reboots while OC

post #1 of 10
Thread Starter 
I'm trying to overclock my GTX 570 ASUS DirectCU II. I'm using MSI Afterburner and Furmark and cpu-z. While incrementally overclocking the core clock speed the computer just shuts down and reboots. It happens around ~780-790 mhz. No artefacts are visible in the Furmark rendering. It doesn't occur instantly after setting a clock speed. It happens after maybe 20-30 seconds of applying my settings.
The temperature is at around 76 degrees.
I'm a beginner at this, and I am clueless as to what's going on and what I'm doing wrong.

The rest of the system is:
Asus P8Z68-V Pro
Core i5 2500K
12GB Ram
650W PSU

Thanks for all and any help.

Edit: I'm fairly sure this is temperature related now. I manually set my fan speed to 60% (turning it into a jet engine) and then stepped up to over 800mhz (no artifacts still) and ran it there at around 66-70C for many many minutes. Then I slowly turned down the fan speed until temperature hit 80C and shortly after that... reboot.
What's causing this and can I override it somewhere? Google and bios rummaging yields me nothing.
Edited by Flakk - 12/13/11 at 5:54am
post #2 of 10
I had the same card and the exact problem running furmark, i think its "normal" in that card.

Its temperature related if it hits more than 75c we have a system reboot for sure...
Edited by FiShBuRn - 12/13/11 at 7:43am
post #3 of 10
Thread Starter 
Hmm, but in articles describing others overclocking this card, this has never come up.
post #4 of 10
Unstable OC. Simple as that.
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post #5 of 10
Dont think is unstable OC its not a normal behavior....mine never rebooted or crashed to desktop while gamming (bf3, etc) but with furmark 10m if the temperature hits >75c the system reboots...

At stock clocks if i didnt change the fan profile the same happens...
Edited by FiShBuRn - 12/13/11 at 8:01am
post #6 of 10
Can't see on tapatalk, but what is the model of your psu?

Sent from my HTC EVO 3D X515a
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Hard DriveHard DriveOptical DriveOS
Western Digital Scorpio Black 320gb Synology DS210j (4tb) Apple SuperDrive Mac OS X 10.8.4/Windows 7 Ultimate 64bit 
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post #7 of 10
Thread Starter 
Corsair
post #8 of 10
Corsair TX650-V2 ? We had almost the same setup...

I had my GTX570 DCII at 900/2200 @ 1.125v
post #9 of 10
Thread Starter 
No, just TX. Not the V2.
post #10 of 10
Thread Starter 
FiShBuRn was right, it must've been something with Furmark. It works fine with MSI Kombustor. Thanks for the help!
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