One thing I don't understand is how you would consider choosing between a 5770 or 460? There's a huge difference with the 5770 not even touching the performance of the 460. Seems to me the better decision would be between the 5830 and the 460.
I can get a 5770 for R1700
or a gtx 460 for R2100
The gtx 460 will need a new psu and cpu, while the 5770 wont need any extra parts
I rate the 5770
I wana play 1980 X 1080 in fps games like cysis,cod4 5 6, moh, and play directx 11 games