I have a HP Media Center PC m7490n I am wanting to upgrade cpu and motherboard and use parts out of my old computer as far as I can. It is 940D processor 3.2 GHZ. 4 GB DDR2 , 1 Tb hard drive and have a Radeon HD 4550 grachic card, psu 300 watt. I can upgrade that if I have to . I play games and do cad programs and restore old photos and new ones. I can't affort a great deal of money but would like to put in a good core 2 or Quad. I also have a RTM Win 7 32bit or 64 bit os program. Thanks for any help that you can give me.