Chirag Borawake said:
I agree to akxpckwb.
Because anyways, if you buy a new GPU worth $450, it'll be a huge bottleneck because of your CPU, RAM.
And if your are not planning to change your display, then $450 is too much for that resolution.
Divide that money instead, and get a decent CPU, motherboard and RAM, and get a good GPU.
Still if you wanna continue with the same build, then go for ATI Radeon HD 6770 1GB, it would be enough for your resolution, for Ultra settings, for now. You can change the rest later.
Anything over that GPU would be an overkill for the build of yours. Choice is yours.
Thank you for your valuable suggestion , How about buying an nvidia GTX 560 (may be 560 ti ) or amd 6850 ...
and what about amd 7000 series i.e 7770 or 7850 .... ?
Will also these cards be bottlenecked by my Core2Duo ??