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GTS450 now unstable at stock

post #1 of 13
Thread Starter 
Hey guys,

I have an ECS GTS450 which I bought about 2 months ago secondhand. It was only a month or two old at that time, and had been mildly overclocked.

I got the core clock up from 783 to 870 and it was stable at that for a week or so, no issues, folding all the time. So then I decided to bump up the memory clock as well, and I took it from 1804 to 2000, with no voltage bumps. I had no issues for another 2 weeks, so I pushed it to 2100 on the mem with vcore of 1100 (stock is 1025).

This was only stable for a few days, so I took it down to 2050, still unstable.

I put it back to 870/2000, which as I said was stable for about 2 weeks, folding or gaming most of the time. This was immediately unstable. I dropped it down to 850/1950, still unstable.

I've had it back at stock for a week or so now, and F@H keeps throwing UNSTABLE MACHINE errors at me. I have seen no issues while gaming.

Help?

Cheers,
LAF
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post #2 of 13
Download OCCT
http://www.ocbase.com/perestroika_en/index.php?Download
run the program and use the GPU OCCT to check the GPU at full load and check for artifacts.
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post #3 of 13
L3gacy's post won't help at all really. It's a problem with F@H trying to keep using the same old PPD and stuff, just delete them then fold. Had the same problem myself.
Edited by Anthraxinsoup - 4/2/11 at 10:44pm
    
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post #4 of 13
Quote:
Originally Posted by Anthraxinsoup View Post
L3gacy's post won't help at all really. It's a problem with F@H trying to keep using the same old PPD and stuff, just delete them then fold. Had the same problem myself.
post #5 of 13
Quote:
Originally Posted by topog_z View Post
What does checking for artifacts do? Unless he runs barely tasking games at low res and settings.
    
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post #6 of 13
Quote:
Originally Posted by Anthraxinsoup View Post
What does checking for artifacts do? Unless he runs barely tasking games at low res and settings.
It tests to see if the card is damaged......
post #7 of 13
Quote:
Originally Posted by topog_z View Post
It tests to see if the card is damaged......
Yeah, once again, if he never runs anything hard on his GPU. Crysis 2 will even show artifacts, so will BFBC2(Shows more than Kombuster, and Heaven 2.5, haven't tested against OCCT).
    
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post #8 of 13
It may not have liked seeing such a high mem clock, Ive heard of cards being permanently damaged with mem clocks well into the 2k range. Folding doesn't need high mem clocks at all, and over 2k the returns diminish in gaming.
 
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post #9 of 13
Thread Starter 
Yeah I know folding is about the core, but it was the constant and was perfectly stable throughout that whole time. I rarely see issues in games, although FO3 likes to crash after about an hour of play and BC2 crashes the drivers.

I'll try running OCCT and see what happens.

The PPD post, wth does that even mean?

EDIT: I'm having serious issues with OCCT, it won't download above 10KB/s, I've speedtested and Steam is happily dling at 300KB/s

EDIT 2: Got it downloaded, ran a GPU memtest (10 runs, no errors), then tried running the GPU OCCT test. Nothing appeared onscreen, temps did not increase... I set it to do 10 mins at fullscreen, 1280x1024 @ 75Hz, which is what I run all my games at.

EDIT 3 (): Got OCCT to run, it was just my stupidity of course Ran for 10 mins with default of 0 shader complexity, res of 1280x1024 and refresh rate of 75Hz. There were no errors during that time so it must be something to do with my F@H Client :S

Don't know why I have trouble with FO3 and BC2 though, haven't noticed anything in any other games
Edited by LAF - 4/3/11 at 8:12am
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post #10 of 13
You can try deleting the 'Work' SubFolder in your F@H Folder as well as the files- 'queue.dat', FAHcore_11.exe, and FAHcore_15.exe. That will basically give you a fresh client without the need to go through the initial setup again (work and queue will be automatically recreated and the necessary cores will redownload).
 
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