The issue is they are performance limited by voltage which will be shown in GPU-Z even with the voltage bumped up to 1.1V .. out of interest what was your actual max power draw ? Sounds like you got a good card anyway with a 3.1Ghz boostOK just to dispel any FUD out there.. these cards (at least my Gigabyte Gaming OC) voltage is NOT locked. Stock slider position the card is 1.05v, slider to max right is 1.1v.
![Cool :cool: :cool:](/styles/default/xenforo/vbSmilies/Normal/cool.gif)
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