Ok, thanks for the answers
I have a GTS 250 and my bro has a HD4870 on his computer, so I guess I should as well download DX11 then
This question may not be related to the thread that much, but I feel it is better than starting a new one...
Will DX10.1 cards benefit much over the normal DX10 cards when playing DX11-games? For example, will the HD4870 gain some noticeable performance over a GTX260 216 core(since they are pretty equal now)?