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Overclocking Stability Issue

post #1 of 5
Thread Starter 
Hey Guys,

I overclocked my XFX 9600GT from stock settings of 650MHz/1800MHz to 730MHz/2250MHz. I did the overclocking through RivaTuner, and artifact tested in ATITool. These were the max settings that gave absolutely no artifacts in ATITool. My temps at load were about 60-65*C.

As I played CS Source, after several minutes my video would cut out and the computer appeared to freeze. My screen would suddenly go black, the power LED on the monitor switched from green to orange, and whatever sound was being played by the game at the time of this video loss would just repeat over and over. I manually restarted, played again several times, and this repeated itself every time, usually after about 10 minutes or so of game play. Before the loss of video, there would not be any artifacts.

I put the card back to factory defaults and played for hours yesterday with no problems. So here's my questions:

1) It's obviously unstable from the overclock, are there any suggestions of how I can regain stability at those overclocked settings? Would adjusting the PCIe frequency help? It's currently locked at 100MHz.
2) How can I be sure a vid card overclock is stable without gaming on it for hours? It gave me no artifacts in ATITool, which I thought was a sufficient test. I don't want to overclock computers for friends and give them a faulty machine.

Thanks for the help!
White Whale
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White Whale
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post #2 of 5
Quote:
Originally Posted by durch View Post
2) How can I be sure a vid card overclock is stable without gaming on it for hours? It gave me no artifacts in ATITool, which I thought was a sufficient test. I don't want to overclock computers for friends and give them a faulty machine.
I really doubt there is a way to be sure it is stable unless you actually try it in-game. I usually don't have that problem though (ATITool seems more sensitive to me with regard to artifacting than gaming) but it does happen. Even while OCing a CPU, I had times that Orthos gave me no errors but my CPU locked up while doing something trivial.

Usually I go for an ATITool artifact test and 3dmark06 to see if it will/should be a stable OC.
post #3 of 5
Sounds like you are hitting a voltage wall. Much like cpu's you can only OC so far before you need to raise the voltage. If you want to push it and further you will need to do a voltmod.
That Loud Thing
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That Loud Thing
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post #4 of 5
yeah the same thing happens to me. i use rivatuner, o/c, then test with atitool, no artifacts. when i go to play a game the same thing happens to me that happens to you. so, i just put the card back to stock settings and everything is fine. although, my ultra is already factory o/c'ed, i guess thats as far as it wants to go.
My Gaming System
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post #5 of 5
Thread Starter 
It seems like a weird response to instability. This was only my second vid card overclock, but it seems to me that a card usually artifacts before completely failing like that. Oh well, thanks for the feedback guys.
White Whale
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White Whale
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CPUMotherboardGraphicsRAM
Intel i7-4770K Gigabyte GA-Z87X-UD4H MSI TwinFrozrIII 7950 2x8GB Crucial Ballistix Sport XT 
Hard DriveCoolingOSMonitor
250GB Samsung Evo Noctua NH-D14 Windows 7 Professional 64-bit 24" Samsung ToC T240 1920x1200 
KeyboardPowerCaseMouse
Saitek Eclipse (Blue LED) 660W Seasonic Platinum SS-660XP Corsair 600T (white) OCZ Equalizer 
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XTrac Ripper 17" x 12" 
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