Friends, I was looking for nvidia card which give price and performance equal to HD 4770 in gaming. Now as HD 4770 performance is between HD 5670 and 5750.
so i will have to wait for some more time. i am looking for new generation card.
HD5670 ~ HD 4770
HD 6800 series will launch on Friday, 57xx prices will drop soon, then grab a 5750. (or a GTS450, if 57xx prices go down, then surely Nvidia will cut the prices of GTS450's)