yakamaster :
but some features of gtx 460 is greater than 660 ti, such as memory bus(256bit vs 192bit).does it really matter?
http://www.hwcompare.com/13167/geforce-gtx-460-2gb-vs-geforce-gtx-660-ti/.
memory bus is irrelevant here as the 660ti has other features which offsets anything the 460 offers.
To make it simpler, the 660ti is worlds apart from a 460. trust me, i had a 460 and i have a "650 ti boost" now. you just can't compare the 2.