i have a single gtx 460 wich im thinking about upgrading for a gtx 560ti or a gtx 570 the problem is right now i only have a i3 [email protected] im worried its bottlenecking my 460 so i can imagine what it would do to gtx 560 or 570 i can get a cheap i5 760 but then would have to wait for the gtx 560 or 570 so would i be better off getting the i5 760 for now with the gtx 460 and next week get the gtx 570 + in the following weeks get a second gtx 570 wich is the best performance upgrade path?
thanks to anyone that can help.

thanks to anyone that can help.