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Powercooler 7870 tahiti le myst wont overclock?

post #1 of 2
Thread Starter 
i have a video card that wont seem to overclock.

when i try to raise gpu and memory mhz up. the gpu underclocks itself to 501 mhz while gaming. when i reset the settings, the gpu runs back at default 925 mhz while gaming. i tried different drivers, different programs (ccc, msi afterburner). any idea why?
post #2 of 2
Try using sapphire trixx. My 6950 wouldn't get its voltage to go up in either ccc or msi afterburner.
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Space Heater
(11 items)
 
  
CPUMotherboardGraphicsRAM
i7 870 Some Dell Mobo 6950 2gb 8(4x2)GB DDR3 @ 1333mhz 
Hard DriveOSPowerCase
Seagate Barracuda 1 Terabyte Win7 Home Premium 64bits Hx750 Corsair 800D 
MouseAudioAudio
Logitech G500 Asus xonar dg Beyerdynamic dt770 pro 80 
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