Sapphire HD 7950 Flex 3 GB 12

Sapphire HD 7950 Flex 3 GB Review

Temperatures & Clock Profiles »


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 1025 MHz core (19% overclock) and 1865 MHz Memory (49% overclock).

GPU overclocking potential is a bit below what we have seen on other cards, including the AMD reference design. Memory overclocking on the other hand works amazingly well, even though Sapphire uses the slower and cheaper -T2C chips.

Maximum Overclock Comparison
Max. GPU ClockMax. Memory Clock
Sapphire HD 7950 Flex1025 MHz1865 MHz
PowerColor HD 7950 PCS+1075 MHz1775 MHz
MSI HD 7950 Twin Frozr III1020 MHz1650 MHz
AMD HD 79501085 MHz1785 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,
reached 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 22.1%.
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