I have been interested in building a comp...building it is know prob...I know how. I was interested in the amd64 4000+ and I was reading some peoples comments. It isn't a bad cpu but some one was talking about the 3500+ San Diego (2.0GHz, 1MB L2). Is this cpu locked or unlocked??? Also where could I find it...Newegg, Tigerdirect, Zipzoomfly...I haven't really looked for that specific of a core. Is it good. Any info will help, thanks!!!