actually....you can't get too much for o/c with the duron. i'd say that if you have a board that supports true 266 fsb, and plan to o/c.......go for the athlon....otherwise the duron is a good chip. runs cooler, has the #Dnow and SSE enhancements, and it is actually rated faster tahn a 1.1 athlon 266...........so yeah hope that helps.