the ram wont if you are playing at 1920x1200 resolution and only one monitor, esp if you have a crossfire configuration. You were asking which is the best setup you listed for gaming.... so the 5870 is what was replied based on your question. If you would like to streamline that opinion, go do some research ; the 5870 is still better than the 5850, although not by a huge margin - is still better.
Hello, which of these set ups would be better for gaming?
Saphire 5850 Toxic 2gb Crossfire.
Other cards I am considering are 6950 2GB, or 5870 1GB crossfire.
I will be gaming at 1080p, want to be future proof and play games such as Crysis with loads of texture mods.
couple of things to think about. first, i had to upgrade from a 1gig 5850 because there wasn't enough vram to run my games without various problems. even a slightly older MSI GTX260 Lightning played everything better because of the extra ram. if i had the 2gig model ( 5850 ) i wouldn't have needed to upgrade ( down grade ) so soon.......... however, it's a moot point because the newer games, BBC2 for example, and probably Crysis2 with the new DX11 patch will need a better card with different architecture to handle tessellation better. this is where your other choice comes in. the 6950 2gig card. best "midrange" card i ever owned. plays everything totally maxed out at 1920x1200 without any kind of problem. want something for "future" proofing ( no such thing ), that or better would be the choice to make IMO. cross firing those older cards look good on paper but do have their limitations.