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The HIS 7950 IceQ X² Boost Clock carries the same cooler as the flagship HD 7970:

We won’t describe it again, so let’s move on to checking out its performance. First, with the default thermal interface:


Auto fan mode

Maximum fan speed

As the IceQ X² did well on the high-speed Radeon HD 7970, it should have no problems with the HD 7950. Indeed, the GPU is 70°C hot in the automatic fan regulation mode (2640 RPM) and 66°C hot at the maximum speed of the fans (3880 RPM).

The temperature lowered by 4 to 5°C in every mode after we had replaced the default thermal interface with ARCTIC MX-4.


Auto fan mode

Maximum fan speed

We can also add that the speed of the fans decreased from 2640 to 2470 RPM in the automatic regulation mode, so they produced somewhat less noise. The practical benefits of replacing the default thermal interface are obvious.

We checked out the card’s overclocking potential with its default thermal interface, though. The GPU clock rate could be increased from 950 to 1140 MHz, which is 34.1% higher than the GPU frequency of the reference AMD Radeon HD 7950, but the memory chips were a letdown, reaching only 5960 MHz.

So, the resulting clock rates of our HIS 7950 IceQ X² Boost Clock were 1140/5960 MHz:

As with the HIS 7970 IceQ X² GHz Edition, the peak GPU temperature increased by 3°C at 2830 RPM at the overclocked frequencies.

 

 
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