I'm a little uneducated in this kind of thing so I'll list all I know about my setup for now
Processor - Phenom II 840 3.2GHz quad core
RAM - 4GB DDR3
Motherboard - Asus M4A88T-V Evo
Power - 400 watt
If there's anything I've left out I can try find out
What brand is your power supply and how many amps does it have on the 12v rail?