hd 6850 is much better then that and really good for its price gtx 550ti is not a good gpu didnt worth it.
hd 6850 in gaming gets about 10-20fps more then that in higher resolution so if u r getting both cards in same price then choose hd 6850 which will be more better then that in over all performance.
( if u want them for gaming , then i suggest ur go for a 6870 or 560ti , u won't get a very Good gaming experience with the cards that u've choosen ... )
( if u want them for gaming , then i suggest ur go for a 6870 or 560ti , u won't get a very Good gaming experience with the cards that u've choosen ... )
The 6870 doesn't compare to the 560ti. That would be the 6950.