I would like to make my own but Best Buy only sells RAM a few GPU's and thats about it, at least the one by me. I figured if I bought a cheap pre built from them I could just try and upgrade it when I have the money....I also figure anything is better than the laptop im using now, Gateway MX6454. Also my desktop is like 8 years old, I think it has like a 1.6 single core with 512 megs of ram and a 256 video card from like 5 years ago