What is a good graphics card for 300'ish dlls that will last about a year bebore i can SLI/Xfire them. Im not looking for ultra settings just high or medium high. I'm building a system and currently have two 550 ti's with 2 gigs on them. did not buy them they where free and I think they can run games almost ok just planning for a longer term card later this year. (but plan to upgrade during summer). I know the gtx 680 would be a nice card but its been so elusive and some retailers are putting them really high on price jsut for that. Any alternatives?