XFX 9800GX2 Quad SLI

Introduction

Introduction

XFXNvidia's SLI (Scalable Link Interface) has been around for sometime now but up until recently SLI meant linking just two graphics cards together. Not anymore. The white coats at NVidia have been hard at work creating a flagship gaming platform enabling not two but FOUR GPU's in the form of the mighty 9800GX2 x 2. These dual-GPU cards are advertised as the pinnacle of graphics processing technology. What's that you say? Quad SLI aint new! Well OK, Quad SLI started out in life in the form of the 7950GX2 released in mid 2006 but ultimately it fell flat on its face due to scalability problems and Nvidia fell short of delivering better support due to the diminished uptake in the new technology. While the 7950GX2 worked on its own (SLI in a dual PCB - single card solution), Quad SLI performance was ultimately dismal. While I don't agree with the way Nvidia abandoned those stuck with the cards I can understand why they did it as with a new operating system and DirectX10 on the horizon, Nvidia had bigger fish to fry.

3870x2 vs 9800GX2 - CrossfireX vs SLILuckily, the green side of the GPU market have forgiven Nvidia for their past behaviour and have been rewarded with some stunning GPU releases, namely the 8800 GTX. It's been a long time since we had such a fantastic, long lasting, king of performance. Not since the ATI 9700 days has there been a single card dominating the performance sector and despite their best efforts, ATI just could not compete on the same level as Nvidia. You would be forgiven then for believing Nvidia were resting on their laurels as it had been over a year before we saw a 'new' king of the hill. So what pushed Nvidia out of hibernation? CrossFireX. ATI's answer to grabbing back the performance crown. ATI GPU's simply did not have the raw power to dethrone the mighty G80, so instead ATI took a different approach and simply stuck 2 GPU's on the same card in the form of the 3870x2. Now the 3870 is no slouch so linking two of them together on the SAME PCB, with the further possibility of using 4 of the cards in CrossFireX was sure to ruffle a few feathers over at the Nvdia house and kick them into action.
 
So here we are today with the 9800GX2, Nvidia's flagship card(s). I say cards as although the GX2 is a single slot PCIe solution it is still two PCB's linked together rather than adapting to the ATI approach of putting both GPU's on a single PCB. This time however, Nvidia have wrapped them up in a sleek looking metal frame and rather than looking like the Star destroyer that was the 7950GX2, the 9800GX2 looks strikingly like the Monolith from "A Space Odyssey".

To evaluate the performance of Quad SLI we will be pitching the offerings from XFX against its arch rival the 3870X2 in Quad Fire (CrossfireX) which again is 4 GPU's linked together in a 2+2 format hence comparisons will be made throughout this review in an attempt to discover which solution is best for you.

Lets take a look at the GX2 in greater depth...
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Most Recent Comments

22-06-2008, 10:49:22

w3bbo
With matured drivers we take a look at where your money should go with regards to a Quad GPU setup. XFX 9800GX2's or ATI 3870X2's.

22-06-2008, 11:31:57

nepas
nice review mate,and very impressive results.However I can safely say that there is no way I could justify spending that amount on gfx cards,but would love to try it out

22-06-2008, 11:49:45

w3bbo
Yeah it's alot of money to fork out on GPU's and I don't think I could justify paying that much but before doing the review I was more than content with my quadfire setup...now I have my doubts after playing with the Quad SLI setup.

22-06-2008, 12:01:34

cuprasport
Very nice mate very in depth

whens the 4870 crossfire and 280gtx reviews?

22-06-2008, 12:07:58

StevenG
nice review... shows everything i wanted to see here.. too bad i cant afford the gx2's. 48*0's should be good though. wouldnt mind seeing a review comparing these to the G260/280

StevenG

22-06-2008, 12:09:30

ionicle
looks good

but yea, a 4870 in crossfire also would have added nicely to the comparison

but i'm guessing you can only do so much

22-06-2008, 12:10:03

Luigi
Nice, you can really see quad sli make its own at 2560x1600

22-06-2008, 14:42:05

w3bbo
Cheers. Yeah it would be nice to test the latest and greatest , especially in SLI/CrossfireX - watch this space.

As a side note would you all prefer the res to be turned down a little as I know not everyone has 24-30" screens (although you should!).

22-06-2008, 16:33:41

FarFarAway
Nice review again Rich I think the price is far too high even for the half decent high level performance seen here to be honest

Plus those babies get majorly hot and majorly loud

23-06-2008, 05:45:22

Rastalovich
One thing that bothers me is how the gx2 takes 2 slots and the single pcb cards take 2 slots.

23-06-2008, 10:22:20

w3bbo
Basically both GPU's are still cooled efficiently as the GX2 has one large cooler attached to both cores(one either side of the cooler) rather than each core having a separate cooler. The downside to this is that the heatsink needs alot of air to be passed through it which in the GX2's case means more noise.

23-06-2008, 11:24:19

Luigi
What screen you on webbo? a 30" im guessing... Nice review I can see its not really worth it for me on 24, unless I add loads of AA

23-06-2008, 13:38:49

w3bbo
30" although as the results show a 24" would also be affected though not as much as the res is scaled down.

23-06-2008, 13:39:45

Luigi
:O lucky bugger
Reply
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