All new durons now seem to be 'super locked'. This means the multiplier will not budge and is locked internally. There is no known way around this at present and things like 'speed strip' wont work. Right now you may be lucky to get the last of the unlocked versions. All is not lost however. Stock speed is 12 * 133. If the chips will do 12 * 166 then that is a fine boost for nothing.( 2Ghz) All chips thus far have no problems reaching 2 Ghz. Pete