In the recent past, I asked if I'd have problems running a 266fsb processor on a 200fsb mobo. Thanks for everyones response. I'm going to replace my 750 Duron on a Abit KT7 Raid with a 266 T-bird. I plan to purchase a 266fsb mobo in the distant future. What will I loose, if anything, if I purchase an OEM version of a processor instead of the retail? I'm under the impression the retail version is simpy boxed and has a better warranty. Some sites list the retail version of my processor of preference as having 256K cache but not the OEM. I assume both versions have 256K cache. Articles I've read in the past suggest staying away from OEM versions of hardware, but I don't recall reading the reasons associated with processors (specifically AMD).