You're probably right, but I think Barton could be clocked higher or rated lower... Barton is still a fine CPU, anyway... But Northwood was much more improvement over Willamette than Barton was to T-bred-B...The transitional Barton core, which is basically an improved version of the current Athlon XP with a doubled (512K) Level 2 cache, takes something good and makes it better -- just as Intel did with the Pentium 4 Northwood core.