Most boards had BIOS that let you set it at 2x or 4x. Setting at 4x didn't always fix it, so programs like RivaTuner allow you to force 4x.
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ok, i fixed it... thanks everyone, i just went into BIOS... but one more thing, my cpu temp is getting higher as time goes on (not rapidly), at the moment it fluxuates between 54C and 56C... should i get the Thermaltake Volcano 11+ to fix the problem? and if so, should i bother overclocking?