palomino & thoroughbred

They differe in die size, and heat dessipation. Thoroughbred is much better than Palomino, while Thoroughbred-B is better than Thoroughbred-A; and there is another Barton which suppose to be better than Thoroughbred-B.

Anything that can go wrong, will go wrong.
<A HREF="http://www.anandtech.com/mysystemrig.html?id=22996" target="_new">My System Rig</A>

Heres some helpful info that will help you understand how to find out what processor core you have/want, especially if you want to run it at 2.2ghz+ (overclocking).

typical Palomino code; AX 1700 A M-(1.75v) R 3 C
typical Tbred A code AXDA 2200 B K-(1.65v) V 3 C
(AIUGA stepping, A at end = tbred A)
typical Tbred B code AXDA 1700 D U-(1.60V) T 3 C
Look for JUIHB/AIUHB = tbred B, on the next line or on web pages with the code voltage L (DLT3C) (266fsb) or DLT3D (333fsb) for 1.5V to get the coolest processor!