OverclockingThe overclocking results listed in this section were achieved with the default fan and voltage settings as defined in the VGA BIOS. Please note that every single sample overclocks differently, which is why our results here can only serve as a guideline for what you can expect from your card.
The maximum stable clocks of our card are 1135 MHz core (34% overclock) and 1635 MHz memory (31% overclock).
|Maximum Overclock Comparison|
|Max. GPU Clock||Max. Memory Clock|
|Sapphire HD 7950 Vapor-X||1135 MHz||1635 MHz|
|Sapphire HD 7950 Flex||1025 MHz||1865 MHz|
|MSI HD 7950 TF III||1020 MHz||1650 MHz|
|PowerColor HD 7950 PCS+||1075 MHz||1775 MHz|
|AMD HD 7950||1085 MHz||1785 MHz|
Important: Each GPU (including each GPU of the same make and model)
will overclock slightly differently based on random production variances.
This table just serves to provide a list of typical overclocks for similar cards,
determined during TPU review.
Overclocked PerformanceUsing these clock frequencies, we ran a quick test of Battlefield 3 to evaluate the gains from overclocking.
Actual 3D performance gained from overclocking is 31.5% (vs. stock) and 25.7% (vs. Boost BIOS).