My dual Radeon HD 4870's (2 GB video RAM total) run all the games I have at max settings with AA cranked up to 8X and 1920 x 1080 resolution. This includes:
-Medal of Honor Limited Edition (that MoH game that came out in 2010)
-FO3 and FO:NV
-Dragon Age: Origins
-Crysis
-Oblivion
-Morrowind with max settings using MGE
I know that none of these games are the most gaphics-intensive, though. Does anyone know of a game that can test my system's graphics cards to the max? MoH seems the most graphics intensive of them all, but the linear environments might make things a bit too easy for my cards.
So, if my 4870's can do this, your 6850 should do just fine. Note, however, that I don't look at my framerate. All I care is that I get smooth movement with limited or no stuttering. Also note that I've very happy I went with the dual card option, because the 5870 wasn't out when I bought my rig, and one 4870 would already feel old by now
.