35k
Simple.
E5300 Dual Core - 6k
Asus P5KPL-AM-SE - 4.5k
2GB RAM DDR2-800 - 4.5k
ATi HD5770 - 18k
Asus Z45P - 4.5k
Close to around 35k ... hoping you have an old hard disk you can use. Else get yourself a HD4870 or a HD5750!
Reason for the halka processor ? Its the GPU that matters. ANd you can overclock on the STOCK cooler to around 3.4-3.6GHz, which would be pretty good as it is!
Oh and, for any 'credibility' of my advice ... Im Sir Ahsan from PakGamers, their Hardware Zone Mod (And a Global Mod).