Hi all... i have a very old computer i use mainly for emulation and some you tube videos. It struggles to run the n64 emulator, so i'm going to replace the ram( already got 2x 4gb ram) chip and graphics card. (it has a Gigabyte M61 SME-S2 motherboard with 1gb ram, amd 64 x2 5200+ chip, and GeForce 6100 nforce 405 gcard). Would the amd phenom ii x4 970 black edition be the best chip? ... and any cheap graphics card advice would be appreciated too. Power supply is 300w. Thanks.