how about the 6790? I think it's only $10 more than the 5770 (at least in my country)
but how about the performance? is it much better or just a bit better than the 5770?
TBH your resolution is less demanding than even 1280X1024.You don't need a 5770 at that low resolutions.Even a gts 450/amd 5750 is enough at your resolution for maxing all your games