wow...with that res; you'll probably get 100+ FPS on a GTX570
as its actually a great card for 1920x1080/1200 res setups!
if you're looking for something within a budget than getting a 6770 would be good. Though if you can pick up a mid-high end ranged card then you've set yourself a long time before upgrading.
If you have any sites you would like to purchase from; lemme know, could shoot you some recommends.
* i forgot to show you this link;http://www.tomshardware.com/reviews/gaming-performance-radeon-geforce,3018-7.html
I don’t recommend upgrading your graphics card unless the replacement card is at least three tiers higher. Otherwise, the upgrade is somewhat parallel and you may not notice a worthwhile difference in performance.
so find your 9800GTX+ and see where you stand
so 6870/6950/6970 ftw