core 2 duo(2.9ghz)
3 gb ram
cooler master 460 watt psu
xfx 5770 ( just upgraded from 9800gt)
vista (32 bit)
Games performance decreased instead of inceasing.
Starcraft 2 was running at around 55 fps @ 1440x900 when I have 9800gt & it is now running at 23 fps.
Crysis was running at around 30 fps high settings @1440x900 with 9800gt & now running at 18 fps.
All other games have same problem
I have reinstalled the drivers but still no improvement.
Please tell me what is the problem