I've got a pc with the following specs:
Processor: Intel core 2 duo cpu e7500 @ 2.93GHz 2.93GHz
System Type: 32-bit Operating System
Graphics Card:Intel Q45/Q43 Express Chipset. Approx.Total Memory:1302 MB
Current display Mode:1280 x 1024 (32bit) (60Hz)
I'm running on windows vista basic and I play games such as :
cod modern warfare two-test drive unlimited 2 (very slow)-crysis 1-Empire total war.
this is absolutely useless information. please read the above posts and try again. There is a post showing CLEARLY what information we need from the PSU, and you are not giving this to us, so we cant help.
there are several factors that would affect your PC performance
i suggest go get a decent Video Card but buying video card also get another factor specially on PSU
like usually most VGA nowadays needs PCIE the 6-pin thingy
and i suggest if you can get your OS to 64-bit and upgrade ram to 8GB