Nvidia 7900 GT and GTX Card Mini Roundup Review

Overclocking

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.

XFX

The XFX is a very fast card at stock. Using Coolbits I was able to get an overclock of:

XFX overlcock

The card got up to a very nice memory speed of 873 before I had to clock down due to artifacts. The core speed did not get as high (594) but this is still a good OC at stock cooling with temps no higher than 72°C. I think putting this card under water and adding some RAM sinks would get you a huge OC. Definately a good card if that is your kind of thing.

Gainward

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.

Gainward OC

I have a feeling that the above overclock would have made the Gainward card very fast indeed. Unfortunately running the card at 611/745 could only just not keep up with the XFX at very high memory speeds. As I mentioned above: Gainward are looking into this issue and I will edit this article accordingly if they reply with information.

Club3d

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.

club3d overclock

This improves the cards performance by quite a bit: going from a fast card to a very very fast card. The 7900GTX cooler is no doubt an excellent one.

Results

Here are the results for the 3dMark 06 run when all of the cards were overclocked:

3dmark 06 overclocked


Overclocking Summary


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.


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Most Recent Comments

20-05-2006, 07:17:01

FarFarAway
We take a look at a couple of nvida's high-end cards

Click Here for the goodnessQuote

20-05-2006, 07:27:48

Hyper
Excellent Review Kemp, keep it up

SamQuote

20-05-2006, 07:42:45

dave87
Yup, nice work Quote
Reply
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