Overclocking
The 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 1245 MHz core (8% overclock) and 1505 MHz memory (20% overclock).
Overclocking works very well, but ends up a bit below the best results we've seen from other cards.
Maximum Overclock Comparison |
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| Max. GPU Clock | Max. Memory Clock |
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PowerColor HD 7870 Vortex | 1245 MHz | 1505 MHz |
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Sapphire HD 7870 Flex | 1215 MHz | 1365 MHz |
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MSI HD 7870 HAWK | 1260 MHz | 1600 MHz |
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MSI HD 7870 TF III OC | 1230 MHz | 1615 MHz |
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ASUS HD 7870 DC II | 1260 MHz | 1620 MHz |
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AMD HD 7870 | 1205 MHz | 1520 MHz |
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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.
Using these clock frequencies, we ran a quick test of
Battlefield 3 to evaluate the gains from overclocking.
Actual 3D performance gained from overclocking is 10.8%.