Now I am getting much better performance from the system. Most of the games are showing significant increase in the fps.
For eg.
CS:Source - 154 fps in benchmark. Earlier it was 38 only.
Resident Evil 5 - 55 fps. Earlier it was around 32.
Assassin's Creed - Brotherhood : 42 fps.
Aniket , can you kindly tell the settings on which you get 42 fps while playing Assassin's creed : Brotherhood. {i get around 20 fps with everything high and AA-> 2x}