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GTX 460 Overclock scare of my life. Need Help!

post #1 of 5
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UPDATE: After running a couple of tests and switching it back to the other PCI slot it worked. It must have been the drivers that totally crashed... Thanks guys!

Ok having my brand new computer, i've decided to overclock my GTX 460 which a really good graphic card. I played a bit with it and found hiccups when reaching 820 core clock so i decided to raise the voltage since it seemed rather low at stock ( .937 ), i raised it to around .975 which i found on the internet was supported well by the card. Then raising my core clock to 830 i found myself with the related shader and a memory clock of 2000. (NOTE: At 810/1620/2000 the card run under torture load on Furmark at ~84* )

Sure that it wouldn't screw up since all those numbers seemed pretty reasonable related to what i saw online and even if i was running on stock cooler i opened FurMark and crancked everything to get a nice fps of around 34 or such. I waited, seeing the heat rise quite a bit until it peaks to about 90* which is really warm but still under the threshold I let my card run a little more then it happened! The card crashed totally stopped in an instant after 10 min of furmark. The computer kept running normally except the graphic card wasn't responding at all and I had no display.

Then i panicked a little and after keeping my cool i concidered the worst and the best. Worst was that my graphic card simple well crammed... best is the drivers that crashed and i had to restart. It was easy to know... no graphic card... no screen... so I restarted... a big and naughty anxiousness raising as i see it not working, the screen didn't light up even in DVI and VGA... I feared the worst.

I'm relatively new to this kind of thing, most ive learned was into to torturous time i was waiting for the damn thing to be at my door so this problem was BIG. Now i heard that sometimes when the driver crash... they are corrupted and dont repair by themselves so i changed my tactic, i opened my computer and changed the graphic card to the second PCIe x16 that is on my computer and crossed my fingers! BOOSH! It worked, i was so happy and felt like a genius.... but now im bothered...

It would be ok if i had only one card and I wouldn't need the other slot but there is another good GTX 460 comming here for the SLI... My Mobo only have 2 PCIe 16x so now im worried that the problem that happened might prevent me from having my second card installed. I am wondering if it is either the just the drivers and i will be able to fix that when the second will be here or if its actually the PCIe 16x on my mobo that stopped working...

This is where i need your help guys... What might be the problem and if you know anything else to my situation please tell me.
Edited by Fedack - 5/3/11 at 4:24am
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Blue Aura
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post #2 of 5
I actually read your post, but it was not formatted at all and very difficult to read through that wall of text.

First and foremost, anything over 80c should raise concern. When you overclock you should have your fan running at higher speeds until you verify what is stable and try to keep your temperatures safe. (Under load anything between 60-80 should be fine)

A 460 has a default core clock of 675... raising it to 820 with such low volts is going to be hard to stabilize. Until you're experienced enough at overclocking, you should really only be raising values moderately.

.975 isn't that high of volts, but when you start overclocking you should only adjust one setting at a time. Once you find a stable core clock, then you adjust the memory. Just because some guy on the internet was able to overclock at a certain frequency doesn't mean you will be able to. Every card is different... for example, my Asus 570 could barely overclock to 850 while my MSI overclocks to 935+.

I doubt that anything was damaged, I would suggest trying it in the original pcie slot again and start from scratch. Do more researching on overclocking and be more patient. Stabilizing overclocks can take a lot of time and patience.
Edited by gl0ry - 5/3/11 at 2:03am
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post #3 of 5
OMG MY GODDDD IT BURNSSSSSSSSSSSSSSSS!!! My Eyes!!

Although I read it, I had difficulty in reading it properly, anyways, You didnt quite specify what happened when you tried to restart, like the power leds turning on, display or what-not. Also, please learn to press the Enter button a few times.
   
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post #4 of 5
Those cards are rated at like 105c so as long as it is under there you should be ok. That being said, i would not want my card running at that high.
You might want to check out your airflow or see if something is up with your card. I had a defective one of those and the damn thing was hitting 90c in mw2, rma'd that got a new one and it was like 35c cooler.
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post #5 of 5
If you put the card back in the other x16 slot and it doesn't work, reset your CMOS according to this its a jumper near your bios battery (The jumper is a little blue cover and just switch it over to the other 2. In the picture below that blue thing is the jumper.

cmos_jumper.jpg
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