Nvidia 7900 GT and GTX Card Mini Roundup Review
Published: 18th May 2006 | Source: XFX | Price: |Overclocking
As stated before all of the overclocking was done inside coolbits for the nvidia cards. For the XTX I used the ATI overdrive overclocking facility. Please note that all overclocks were done with stock voltages and were what I call "Quick overclocks". That is: I overclocked, ascertained stability, then benchmarked. Any unstable overclocks will be talked about below.
The XFX is a very fast card at stock. Using Coolbits I was able to get an overclock of:
I had some issues with the Gainward card which I am curently speaking to Gainward about at the moment. I could get a nice OC on the card with coolbits recognising the below speeds. However, as soon as I fired up 3dMark06 I got wavey artifacts on the screen and had to cold reboot. This was very frustrating and the fault was almost certainly with the memory speed as the core clocked nicely. In the end I ended up using the settings 611/745. The problems were not due to high temperatures either.
The Club3d overclocked very well, and managed an impressive 710Mhz stable overlcock. The memory also overclocked nicely. This speed means that the Club3d 7900GTX can score quite a bit more than the XTX running at 690/800. I got to 710/865.
Here are the results for the 3dMark 06 run when all of the cards were overclocked:
Although not included in the stock game benches, these overclocks improve game performance quite a bit. The best thing is that this costs no extra, does not ruin the card and does not require any volt modding at all. I think that the XFX card performed pretty well, with a great memory overclock, but if the issues with the Gainward get ironed out: that card will be very fast and have an extra 256mb of video memory to boot.