Vlad, WHAT are you talking about? The reason they shrunk it down to .13u rather than .18u is that it DOES run cooler, so they can push the speed higher and add more transistors. How does the Northwood run so cool? It's not just magic, it's cause it is built on .13u technology.
The ONLY improvement of the Thoroughbred over the Palomino (Polamino?) is that it runs cooler, other than the raw speed, which itself comes from the fact it runs cooler. I refer you to a quote taken from an Anandtech review of the XP 2200+.
"The main thing to take away from this chart is that the Thoroughbred puts out around 12% less heat than an equivalently clocked Palomino core."
Find that quote on
this page. It is towards the bottom. Also, AMD will be releasing XP 1700+ - 2200+ Athlon XPs utilizing .13u technology. I hope I have made my point