A:AnswerWow...I seriously don't know. I bought this pre built for 11 year old son who is just beginning to be a gamer on PC. I imagine you can since it is upgradeable. Check the HP Omen website.there are a few options that you can upgrade.
A:AnswerYes, the computer came pre-built. My son simply had to download his game(s) and he was literally playing within 30 minutes of pulling the computer out of the box.