i think you cpu is bottlenecking, maybe try to overclock it a little bit more? what is your resolution? and if you want you can try to overlclock your gts 250 too
oh ok, its probably a cpu bottleneck if you play at that resolution. you can buy a better cpu cooler (cm hyper 212+) and overclock more or you could buy a new CPU.
i think you cpu is bottlenecking, maybe try to overclock it a little bit more? what is your resolution? and if you want you can try to overlclock your gts 250 too
this is one of the few games that uses a lot of cpu power, my quad has 70% utilization
i would not buy the q8xxx series as they are poor overclockers i would look on a q6xxx or a q9xxx. i think a q6600 with an overclock over 3ghz would do you good