GPU scaling in SLI went good and as far as frame rates go..i could not complain..(i'm in SLI) i'm also playing BC2..dunno if you'd be getting good scaling with your setup..
AFAIK AMD users are having some GPU scaling problems..might be more aligned to platform issues rather than the driver issues..
and please stop hating Nvdia same goes the other way around..been there(ATI) and was never happy even with 3 gpu's around..
That being said, if you read the thread people are celebrating 3D Mark11 score improvements for several pages. I play games not benchmarks. I was just asking if anybody had seen gains in real games so I could decide whether I should install the beta on my 570. I am currently using 266.58 and am playing BC2.