Factory Overclocked: GeForce 7900 GT
In looking around the internet for prices on these cards, we noted that there are quite a number of overclocked NVIDIA cards available. Some come with a hefty price premium and some are sold at about the same price as their stock counter parts. While we'd like to just look at value with stock clock speeds, the market is just not that simple. In order to better understand the impact of these factory overclocked products without benchmarking every single clock speed combination on the market, we decided to pick a few key speeds and games and run some tests. We will use this information to determine whether the overclocked products are worth more than their stock counterparts, and whether looking at overclocked cards changes our recommendation for what to buy.
We chose to run our overclocked part at our sweet spot resolutions in order to see how each game would be affected. Note that we are only looking at factory overclocked options, which is why we are not including ATI overclocking. These are manufacturer warranted clock speeds, so they are guaranteed.
We've seen everything from 500MHz up to 600MHz being advertised, but the most common core clock speeds (increased from the stock 450MHz) seem to be between 500MHz and 580MHz. For these tests, we chose to run a 580/790 (core/mem) overclock in order to see what the higest performing overclocked 7900 GT parts are capable of doing. Stock memory speeds come in at 660, so a 130MHz memory overclock and a 130MHz core overclock beyond stock are both very significant. The 580/790 clock speeds are chosen based on the EVGA e-GeForce 7900 GT KO SuperClocked card. This is the product listed in our Contenders page available from newegg for $290, which is quite a deal.
The EVGA 7900 GT KO SuperClocked does very well in BF2, improving significantly over the stock 7900 GT to best the X1900 XT and lead the pack at this resolution.
The overclocked 7900 GT is able to just edge out the X1900 XT in Black & White 2.
Under F.E.A.R., the 7900 GT can't best the X1900 XT even with a 130MHz core overclock.
While the overclock gives the 7900 GT a major boost over stock, it merely hangs with the X1900 XT under HL2:Ep1.
ATI remains solidly in the lead under Oblivion, though the overclocked 7900 GT does manage to surpass the stock X1900 GT.
With the added power, the EVGA KO SuperClocked is able to take the performance lead back, not only from the X1900 GT, but from the X1900 XT as well.
Rise of Nations: Rise of Legends falls in favor of ATI's X1900 XT.
Moving up from equivalent performance with the X1900 GT, the overclocked 7900 GT is still unable to attain X1900 XT levels of performance under SC:CT.
The significant lead the X1900 GT has over the stock 7900 GT is eroded when we look at our overclocked card.
While not enough to best the X1900 XT, all of our overclocking tests have shown the overclocked 7900 GT to outperform the X1900 GT, even in cases where the stock 7900 GT lagged behind.
From the data we've collected here, it looks like the overclock on the EVGA 7900 GT is enough to make it a competitor to the X1900 XT. There are plenty of 550+ core clocked 7900 GT parts available from different manufacturers, and these should perform quite well. The X1900 XT still outperforms the 7900 GT at 580/790 in the majority of our test cases by a significant margin. For this reason, we feel that the price difference between the two cards is justified: you get what you pay for by going with the X1900 XT over the 7900 GT.
At the same time, the 7900 GT is no slouch and can hold its own. If the X1900 XT isn't available or is just beyond budget range, an overclocked 7900 GT is a very attractive option. Because of the similarity in price between the stock and overclocked 7900 GT parts, we are recommending that people stay away from the stock 7900 GT no matter what the budget.
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Gigahertz19 - Thursday, August 10, 2006 - link
I can't stand people who always have to correct every damn thing they read, who cares if the authors of these articles make little mistakes? As long as these articles are readable and understandable who gives a shit. I don't think anybody has the right to complain for something that is free for us to read...now if we were paying to read this material it would be a different story.I can understand correcting big mistakes like correcting the author when he uses the incorrect name for something or is wrong about a fact then that should be corrected but little grammatical errors and sentence structure should be left alone unless it's completely butchered. If you're so interested in these small mistakes go teach high school English.
And yes I know some ass on here will find an error in my above comments and correct it, go for it :).
yacoub - Thursday, August 10, 2006 - link
Actually, the authors generally appreciate it and fix it, at least in my experience. It makes for a more professional site to have solid grammar in articles. As for "who gives a s#!t", generally adults do.Netopia - Friday, August 11, 2006 - link
And to support his position, take a look at the sentence now... they fixed it!Joe
JarredWalton - Friday, August 11, 2006 - link
Yup.Derek was working on this late at night and so I went and made my typical corrections after the fact. There were plenty of other minor typos, and we do our best to correct them whether we spot them or someone else does. We certainly don't mind people pointing them out, as long as it's not the "OMFG you misspelled two words on the first page so I stopped reading - you guys are teh lamez0rz!?1!" type of comment. ;)
CKDragon - Thursday, August 10, 2006 - link
I have my 7900GT voltmodded & overclocked to 640/820. I know you didn't show voltmod overclocked benchmarks, but seeing that just a core bump up to 580 brings it close to or better than the X1900XT at stock is a nice reference mark to have.Frackal - Thursday, August 10, 2006 - link
I doubt that considering a 7900GTX with higher core/memory clocks than that usually gets beaten by an X1900XT at stock. (Not to mention to make that fair they'd have to OC the x1900xt too)This review was relevantly incomplete IMO because it did not show the huge difference between an x1900xt and 7900gt with AA/AF on
yacoub - Thursday, August 10, 2006 - link
Nor the huge difference in audible noise levels, for that matter. My 7900GT is practically silent except when in 3D games, and even then it's not a jet engine.yacoub - Thursday, August 10, 2006 - link
I recently upgraded from an X800XL to a 7900GT (eVGA N584 model - hsf is copper and covers the RAM chips). I run the 91.33 drivers.I am extremely pleased with this upgrade choice. The card is actually quieter than my Sapphire X800XL Ultra was (it had the Zalman hsf on it stock but the fan was ball-bearing and made a bit of noise).
My rig:
3200+ Venice
1GB DDR RAM dual-channel
A8N-SLI Premium
Games:
CS:Source
Homeworld 2
Haven't reinstalled other games yet but considering the great improvement I noticed in CS:S, I imagine FEAR, NFSMW, and the other games I own but don't currently have installed would also see a large jump in performance. Not only did I gain fps and eliminate the big dips I experienced in busy scenes with the X800XL, I'm also at max graphical settings (everything High) and anywhere from 2xAA and 4xAF up to 4xS AA and 8xAF, and this is at 1680x1050 (20" widescreen).
Very satisfied with the purchase. This cost me less than the X800XL did nine months ago and performs probably 40-60% better, if not more considering the improved graphical settings on top of the fps gain.
vailr - Thursday, August 10, 2006 - link
When are the DX 10.0 cards going to available?And, what new assortment of ATI or nVidia GPU's will be on the DX 10.0 cards?
Will there be cheap [<$150] DX 10.0 cards?
Warder45 - Thursday, August 10, 2006 - link
I don't see the 7600GT OC 600/750 listed in the charts on the page talking about the 7600GT OC. Lots of 7900GT models though.