You said you either want to put a pentium or an phenom in it, you realize motherboards have specific CPU slots right? Also you know motherboards have specific ram they take also. Just making sure you understand this before you go off and buy like ddr3 ram, a phenomx4 and then run buy a new GPU when your mobo only has a PCIx8 slot or something. Nvm you said you are changing the mobo, wtf did you get the comp for just for a case and an HD?