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SLI 2x Nvidia 650 vs Crossfire 2x Radeon hd 7770

Last response: in Graphics & Displays
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January 23, 2013 8:45:45 PM

I am looking at getting two Nvidia 650 and running them in SLI
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Or i could get two Radeon HD 7770 and run them in crossfire
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

I would overclock them, and I will be running them at a 5760x1080 resolution

Which one would offer better performance?
a b U Graphics card
a b Î Nvidia
January 23, 2013 8:52:19 PM

Two 1GB cards in SLI/Crossfire would be appauling for a resolution that high, you'd fill that up even at 1080p. Much better off just getting a 7950, its a little more expensive than two of those, but it has a 3GB frame buffer, so it is more than capable of driving 3 screens. Not to mention its massively faster, and would actually provide enough performance for that resolution to be viable.
January 23, 2013 9:11:15 PM

If i upgrade the cards to 2 gb ram each, so 4 gb total, would that help?
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a b U Graphics card
January 23, 2013 9:16:03 PM

You also need to factor in the 650 can't sli!!! I wouldn't recommend cfx for the 7770 either because it will provide more horsepower than that amount of ram can handle. You're better of with a 7850 that you can upgrade later. You could also get a 7870.
a b U Graphics card
a b Î Nvidia
January 23, 2013 9:17:56 PM

caleb85 said:
If i upgrade the cards to 2 gb ram each, so 4 gb total, would that help?

No. SLI utilizes alternate frame rendering, two 2GB cards don't equal a total of 4GB available VRAM, as one card still has to store all the data for one frame, and the other card for the next, and so on.
a c 132 U Graphics card
a b Î Nvidia
January 23, 2013 9:18:48 PM

Agreed you can not SLi a 650 or 650Ti. I would not go with a 7770 in crossfire as well. Stability and performance wise both solutions are incomparable to a single gpu solution. A GTX660Ti if you go with nvidia is a good solution which to my thinking would probably be what a 650Ti would be in SLi. And a 7850 is a good chip as well in line with the GTX660. In the end you will be much happier with a single GPU solution Caleb.
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