Hello all, I want to upgrade my graphics card, im thinking either an Asus 550Ti or an Asus 6850. I have a fairly dated system Intel core two quad 2.4 x 4 with 4Gb DDR2 memory. My monitors native resolution is 1680x1024, currently using two nvidia 8800GT cards in SLI, PCI Express x16. My motherboard is an Asus P5N32-E SLI, have a 750w power supply. My OS is Vista 64, wanting to play BF3 at highest setting possible. I hope thats all the info you need.
Of the two cards, the 6850 should perform a bit better than the 550ti in general, but they are more alike than different. But for BF3 that may or may not be the case.
Check out some specific BF3 benchmarks.