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Overclocking a Graphic card

Last response: in Overclocking
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December 18, 2009 2:33:26 PM

I have an HIS 4650 512MB Graphic card. I overclocked it from the Catalyst Control Center.

GPU Clock - Default=600 OCed @ = 700
Memory Clock - Default=500 Not Oced

When i play Battlefield 2 on default settings it runs fine. But when i overclock it even a little bit, it lags.

And i run 3DMark Vantage. Upto 700 on the GPU clock it runs fine. But when i increase more everything gets stuck. Why?

And this card doesnt have a fan. Instead it has a Zalman isilence4 heatsink. In Catalyst Control Center it shows that a fan is working. And it even shows the fan speed %. Why?
December 18, 2009 2:35:36 PM

Sorry ppl. Opened a new thread in the wrong section. Dont post replies here.
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