I have an ATI HD 4670. IIRC it is rated at 1000mhz for the memory clock but I can't get past 923mhz in the Catalyst Overdrive settings. Is that okay?
Is there a way I can raise the limit? I know these cards can get OC a lottle bit more than 1000mhz.
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You'll need a 3rd party GPU aftermarket overclocking tool like the ATi GPU Clock Tool, if 923MHz is the maximum that ATi Catalyst Overdrive allows you on the memory, then that's the furthest it will go with the ATi CCC.