Overclocking
The overclocks 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, that's why our results here can only serve as a guideline for what you can expect from your card.
Maximum stable clocks of our card are 1100 MHz core (5% overclock) and 1750 MHz Memory (23% overclock).
Manual overclocking works a little bit better than the AMD reference design, but the difference is not huge.
Maximum Overclock Comparison |
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| Max. GPU Clock | Max. Memory Clock |
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VTX3D HD 7970 X-Edition | 1100 MHz | 1750 MHz |
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MSI HD 7970 Lightning | 1210 MHz | 1850 MHz |
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AMD HD 7970 | 1075 MHz | 1715 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,
reached 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 9.4%.