|PowerColor PCS+ HD6950 Vortex II|
|Reviews - Featured Reviews: Video Cards|
|Written by David Ramsey|
|Monday, 23 May 2011|
Page 15 of 17
Vortex II Edition Overclocking
With its enhanced power circuitry and excellent cooling, one would expect the PowerColor's Radeon HD6950 video card to overclock very well...and so it does. But please remember that nothing's ever guaranted with overclocking. As the saying goes, your mileage may vary. Also remember that external factors, such as your system's power supply, can affect overclocking results as well.
With these caveats out of the way, let's look at our results:
With 930MHz core clocks and 1370MHz memory clocks, we're a substantial 16% faster on the GPU and 10% faster on the memory clocks than a reference HD6950 (but remember this card comes pre-overclocked from the factory). These might not seem like much compared to the 40+% overclocks routinely seen on Sandy Bridge "K"-series CPUs, but they're excellent in graphics card terms, especially with only air cooling. I did have to keep the fans pegged at 100% speed to successfully complete benchmarking at these speeds, though.
Here's a breakdown of the performance boost provided by this overclock at 1920x1200. Results are rounded to the nearest 0.1 FPS.
The 8.1% average improvement in performance closely matches the 9.4% increase in GPU clock speed over the 850MHz speed it normally runs at.