GeForce 8800GT: Chaintech versus XFX
Date: 20.12.2007 |
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Comparing the cooling systems
Let's take another look at the cooling systems of Chaintech 8800GT and XFX 8800GT.
The fan of the Chaintech video card is a bit larger than that in the XFX. Let's find out how that affected the cooling system operation. We'll do that with the game Oblivion with the maximum settings, including 16xQ-antialiasing and 16x AF. Prior to starting the game, we set the frequencies of both the cards to a common value.
The XFX video card warmed up to 75 C, with the fan rotational speed staying at 1600 RPM.
The Chaintech video card warmed up to 80 C, with the fan rotational speed staying at 770 RPM. It turns out that the cooling systems do their job equally well, with the only difference that the Chaintech version uses a slower fan.
Overclocking
We overclocked the Chaintech 8800GT and XFX 8800GT using the RivaTuner utility.
It allows changing the core and shader unit speeds in GeForce 8800GT independently, due to which the frequency does not limit the frequency potentials of the other GPU units.
During the overclocking, we had to raise the fan's speeds since the cooling systems installed on GeForce 8800GT are not suitable for overclocking. We overclocked both the video cards to an approximately the same level - the Chaintech 8800GT took 740/1800/2000 MHz, whereas the XFX 8800GT was able to overcome 740/1800/2200 MHz for the core/shader unit/memory, respectively.
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