I want to overclock but not right away and have a MSI K7T pro2a. Once I figure this first one out, I'd like to switch my other intel to a 133A mb and a 1.2gig tbird if I'm happy with my first results. I'm leaning to a duron 700(cheapest) to get up and running then try to unlock. Any difference from oem to retail? I have chrome orb, super orb and a fop32 already.