Sapphire HD 7970 Toxic 6 GB 48

Sapphire HD 7970 Toxic 6 GB Review

Temperatures & Clock Profiles »


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.

We used the Boost BIOS for our testing, which runs increased voltage compared to the normal BIOS.

The maximum stable clocks of our card are 1275 MHz core (6% overclock) and 1885 MHz memory (18% overclock).

Maximum Overclock Comparison
Max. GPU ClockMax. Memory Clock
Sapphire HD 7970 Toxic1275 MHz1885 MHz
Gigabyte HD 7970 Super OC1155 MHz1905 MHz
HD 7970 GHz Edition1185 MHz1635 MHz
MSI HD 7970 Lightning1210 MHz1850 MHz
AMD HD 79701075 MHz1715 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 Performance

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 10.6%.
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