Actually if ya check the specs. HTe barton and tbred are identical chips except for the added l2 cache the same die and everything. Both .13 So alls Im missing is the extra l2. I know its not a barton but the 166mhz is nice. Hehe. Really I hear the l2 cache they added didnt help much. Compair a oclocked XP tbred at = mhz to barton and the dif isnt that big. Hardly noticable for games compiling and such. Lest thats what I hear.