should be able to play most every game out there at that resolution i believe just fine long as you don't turn up the AA. You should note though that it is the gpu or video card that will mainly determine your framerate as long as your gpu isn't being held back by your cpu.
In the link you posted they are using the same cpu as you in part of the tests but they are using a 4890 as a video card instead of the 4850 you have chosen to use in your rig so don't expect quite as high of frame rates as they have posted.
sorry if i got something wrong, but i don't think i have too much! :P