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Problem with O.C HD4850

Last response: in Graphics & Displays
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July 13, 2009 4:11:27 AM

I O.C my HD4850 from 625/993 to 700/1098 with ATi Catalyst Overdrive.. The test result was 'passed'... but when running FarCry2 at 1920x1080 BSOD appears(GPU stops responding)... which other O.C software would be better to attain stable clock..

More about : problem hd4850

July 13, 2009 5:52:33 AM

I don't think it is the software. What are your temps before it "stops responding"? What cooler do you have on the card?
July 13, 2009 6:14:52 AM

ok, to let you on a little fact, the ati overdrive thing that "tests" the GPUs is totally BS
it said i could overclock my 3870s with a core clock of 890mhz and 1375mhz mem clock!!!!
I personally just know what my cards can handle from the pains of crash reports and GPU not responding reports. im sure there are some good softwares out there that let you test out your OCed settings but i dont use any.
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July 13, 2009 12:36:28 PM

ragsters said:
I don't think it is the software. What are your temps before it "stops responding"? What cooler do you have on the card?

My card never/ever goes above 60ºC... Usually it works at 50ºC-54ºC
Its from MSI, looks like this:
http://www.geeks3d.com/public/jegx/200808/msi-radeon-hd...
July 13, 2009 12:48:39 PM

rambo117 said:
im sure there are some good softwares out there that let you test out your OCed settings but i dont use any.

I tried FarCry2 Benchmark tool, PC MArk Vantage etc... ended up with BSOD(After O.C)..
July 13, 2009 6:01:15 PM

3D Mark06 works well. It scored 12720
a b U Graphics card
July 13, 2009 6:06:51 PM

he only sure fire way to make sure it is stable is to play your favourite games.. If it crashes then back off the OC a bit and try again. There is so software that could find every instability, though any benchmark utility will give you some idea of the stability.
a b U Graphics card
July 13, 2009 6:12:08 PM

Use ATITool to scan for stability. From my experience with a Sapphire HD 4850, I got it up to 690/1050 without errors. Going higher, while being stable, would require volt mods.
July 13, 2009 6:24:44 PM

A tried ATI Tool... the artifact showed Delta Pixels... so it mean, not stable.. cool..
!