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8800 GTS 320 mb-Overclocking problem.

post #1 of 28
Thread Starter 
Hi Guys.
I decided to try o\\c my gfx card yesterdayand using ati tool i got to 631/899 but while testing for artifacts i noticed a low screeching sound . it only appears when i test for artifacts not when card is idle.
I then ran 3D mark 06 and scored 8730 which is only 28 point above my stock score of 8712, and when each test screen was loading i could hear that same low screeching sound. It went away once the actual test began but start again when the next load screen appears.
I have seen threads about this problem with graphics cards but the sound appears to come from my psu,which has only 18 amps on 3 12v rails.Do you think this is the problem.
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post #2 of 28
It's a banshee that possessed your CPU.

Err, no. 18 amps sounds sufficient, though a lot of newer PSUs you can get have close to 30 now. As for the screech, do you hear it when you're running stock? How about in games? or is it only in Benchies?
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post #3 of 28
Hey same here, I hear a constant buzzing sound that seems to come from the PSU, when scrolling down a page, moving my mouse around, I think it's the PSU or a capacitor, but my fans cover the noise pretty much, and PC works perfectly.
    
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post #4 of 28
The only problem I've had with this type of buzzing was actually from our refrigerator believe it or not. The way our house was built with the electricity, when the refrigerator decides to turn into super cool mode (when it's too hot) it can trigger the speakers on my dad's CPU to buzz, just like how you say (Except you're saying it's CPU, not speakers) Anyway, turned it off and on and is fine again.

Not the point of this topic, but If you have a friend with another PSU, might try swapping.
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post #5 of 28
Or even if you could try a lower powered GPU and see if that helps. Might help diagnose what's the problem. Either not enough Amps, the card itself, the PSU... etc.
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post #6 of 28
Thread Starter 
No i dont hear it when at stock only when i overclock.i dropped my card back to stock and playing Fear at max settings there was no screeching, it only happens when i overclock.With the disapointing score in 3D mark 06 i thought the card wasn`t getting enough power and was held back.
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post #7 of 28
That could very likely be the case, as you push your card harder, it's gonna want more juice to keep it going. So case in point, find a medium between High OC and Stock. Enough to make both of you happy

Besides... can't complain about having an 8800 GTS. Still a very good card, stock or OC.
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post #8 of 28
Thread Starter 
Just been doing a little testing and tried an overclock of 630/1000 and that caused my comp to freeze for a couple of seconds and then screen went blank. Vista then recoverd and a error was displayed about gfx card stopping working and restarting .I think it must be lack of power when o/c so i`ll just have to settle for stock settings untill i upgrade my psu.
Like you say Guffeh it`s good enough even at stock.
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post #9 of 28
Hey man, you don't even have to fork up the extra for a new PSU. Yes, we all like better, newer, faster things. But keep what you have and save up for that Better and newer and faster thing when it comes out... Yeah? Say.. 8900 Series.. Maybe SLI 8800GTS? Then you can get a new PSU. If you run your games fine on stock, and maybe a few extra Mhz OC that doesn't do much harm, and you still are completely stable, that's what you should go for. At least, that's what I think. If you're like me, and you don't have a million dollars to go out and buy what you need, try to make the best of what you have (as you are by trying to OC)

My point: For now, everything you have runs fine. When you realize that CPUs and GPUs around you are passing you up and you just can't play your games anymore... Then perhaps you should upgrade.

Anyway, enough of my opinions. In the end, do what makes you happy Just don't expect a new PSU to solve your OC problem completely (Though it would probably get rid of the buzz )
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Blue Beast
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post #10 of 28
And lastly, here's a quote from a newly created thread. It applies to the 8800 GTS 640 MB version, but may help.

Quote:
Originally Posted by GibbyGano View Post
Welcome to the forums, add your system specs from the link in user CP.
I would recc. at least a 550W PSU with 40Amps on the 12V+. This is just my personal preference, but you don't want to skimp on this, it could kill that pretty new card and everything else in your case.
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Blue Beast
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