Kepler!, Wait and see. Its gonna be worth the wait.
The OP has no resolution stated and his system is pretty high priced. The graphics are research and I don't make suggestions without doing a good deal. I also present my research to help ensure the OP that he has reliable information. Here is the link also with the 1920X1200 if that more to your liking.^
why the crazy high-ass resolutions unless the OP ask or thread comes around to it.?
stay to the 1920 x 1080..
I can confirm that you need to upgrade, more in the GPU department first then surrounding hardware.
my 6 year old son's unit pulls in more than 30FPS...
Possible but to get the OP more enthused about a higher end product soon to be down priced these graphs suggest a real need for 580GTX. IE where the higher end card will currently shine. We really don't know if Diablo 3 can put more strain on these cards making the 2560 resolutions the important ones. Looking at the 1080P resolutions only the OP may fill there is no need for the 580GTX. End up buying the 570GTX right now and see a shard price drop in under a month. Diablo 3 comes out and kills every card but the 580GTX at 1080P. Talking about an unreleased game it is often better to look at higher end resolutions in predict where performance may fall under new titles.it's just that widescreen gaming is not as common as single monitor and without a mentioning of a specific resolution
it's more logical to stay mainstream and 1080 or close to it...