ive updraded my case from a 530s to a cooler master mid tower added graphics card and now would like to upgrade the cpu whats the highest i can go have 500 watt power supply 6 case fans nivda 8500 graphics card cpu running little hot but other wise works well love it now id like to max out the cpu running a intel duo core 2.53 proccesor with windows vista ultimate 64 bit and 4gigs of ram