NVIDIA's 1.4 Billion Transistor GPU: GT200 Arrives as the GeForce GTX 280 & 260
by Anand Lal Shimpi & Derek Wilson on June 16, 2008 9:00 AM EST- Posted in
- GPUs
SLI Performance Throwdown: GTX 280 SLI vs. 9800 GX2 Quad SLI
We had two GeForce GTX 280s on hand and a plethora of SLI bridges, so we of course had to run them in SLI. Now remember that a single GTX 280 uses more power than a GeForce 9800 GX2, and thus two of them is going to use a lot of power. It was so much power in fact that our OCZ EliteXStream 1000W power supply wasn't enough. While the SLI system would boot and get into Windows, we couldn't actually complete any benchmarks. All of the power supplies on the GTX 280 SLI certified list are at least 1200W units. We didn't have any on hand so we had to rig up a second system with a separate power supply and used the second PSU to power the extra GTX 280 card. A 3-way SLI setup using GTX 280s may end up requiring a power supply that can draw more power than most household circuits can provide.
Although a single GeForce GTX 280 loses to a GeForce 9800 GX2 in most cases, scaling from two to four GPUs is never as good as scaling from one to two. Thus forcing the question: are a pair of GTX 280s in SLI faster than a 9800 GX2 Quad SLI setup?
Let's look at the performance improvements from one to two cards across our games:
| GTX 280 SLI (Improvement from 1 to 2 cards) | 9800 GX2 SLI (Improvement from 1 to 2 cards) |
|
| Crysis | 50.1% | 30.3% |
| Call of Duty 4 | 62.8% | 64.0% |
| Assassin's Creed | 38.9% | 12.7% |
| The Witcher | 54.9% | 36.2% |
| Bioshock | 68.4% | 63.7% |
| Oblivion | 72.3% | -35.7% |
Crysis, Assassin's Creed, The Witcher and Oblivion are all situations where performance either doesn't scale as well or drops when going from one to two GX2s, giving NVIDIA a reason to offer two GTX 280s over a clumsy Quad SLI setup.
Thanks to poor Quad SLI scaling, the GX2 SLI and the GTX 280 SLI perform the same, despite the GTX 280 being noticeably slower than the 9800 GX2 in single-card mode.
When it does scale well however, the GX2 SLI outperforms the GTX 280 SLI setup just as you'd expect.
Sometimes you run into serious issues with triple and quad SLI where performance is actually reduced; Oblivion at 2560 x 1600 is one of those situations and the result is the GTX 280 SLI gives you a better overall experience.
While we'd have trouble recommending a single GTX 280 over a single 9800 GX2, a pair of GTX 280s will probably give you a more hassle-free, and consistent experience than a pair of 9800 GX2s.
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Chaser - Monday, June 16, 2008 - link
Maybe I'm behind the loop here. The only competition this article refers to is some up coming new INTEL product in contrast to an announced hard release of the next AMD GPU series a week from now?BPB - Monday, June 16, 2008 - link
Well nVidia is starting with the hi end, hi proced items. Now we wait to see what ATI has and decide. I'm very much looking forward to the ATI release this week.FITCamaro - Monday, June 16, 2008 - link
Yeah but for the performance of these cards, the price isn't quite right. I mean you can get two 8800GTs for under $400 and they typically outperform both the 260 and the 280. Yes if you want a single card, these aren't too bad a deal. But even the 9800GX2 outperforms the 280 normally.So really I have to question the pricing on them. High end for a single GPU card yes. Better price/performance than last generations card, no. I just bought two G92 8800GTSs and now I don't feel dumb about it because my two cards that I paid $170 for each will still outperform the latest and greatest which cost more.
Rev1 - Monday, June 16, 2008 - link
Maybe lack of any real competition from ATI?hadifa - Monday, June 16, 2008 - link
No, The reason is high cost to produce. over a Billion transistors, low yields, 512 bit bus ...
Unfortunately the high cost and the advance tech doesn't translate to equally impressive performance at this stage. For example, if the card had much lower power usage under load, still it would have been considered a good move forward for having comparable performance to a dual GPU solution but with much cooler running and less demanding hardware.
As the review mentions, this card begs for a die shrink. It will make it use less power, be cheaper, run cooler and even have a higher clock.
Warren21 - Monday, June 16, 2008 - link
That competition won't come for another two weeks, but when it does -- rumour has it NV plan to lower their prices. Most preliminary info has HD 4870 at 299-329 and pretty much GTX 260 performance, if not, then biting at it's heels.smn198 - Tuesday, June 17, 2008 - link
You haven't seen anything yet. check out this picture of the GTX2 290!! http://tinypic.com/view.php?pic=350t4rt&s=3">http://tinypic.com/view.php?pic=350t4rt&s=3Mr Roboto - Wednesday, June 18, 2008 - link
Soon it will be that way if Nvidia has their way.