Gear,
I'm not so certain that Thorougbred's will be easier to overclock.... ZDnet Germany posted Wattage numbers for Thoroughbred chips, and nothing has been posted in hte 5-days since to contradict what they posted.
The keys: Thoroughbred is only 10% cooler than comparably clocked XP chip, and that can be attributed to the lower Vcore. But since the Thoroughbred core is 80 sq mm, and the XP is 128 sq mm, Thermal Output per sq mm is 50% higher on the Thoroughbred. Of course, this depends on ZDnet Germany being accurate, but seeing as how Ace's linked to the article wtihout making any mention of refuting the data, and I do not believe zdnet germany would post false information.
SO, in the end, the Thoroughbred may be very hard to overclock. You're talking 60+Watts of heat on a tiny, tiny contact surface. Sure, its great for AMD in terms of number of chips per wafer, but its hell on cooling. Deficiency's in Thermal interface, cooling contact surface, die cracks, etc will be exacerbated. It'll be interesting to see the overclocking on them, htough, despite this.
Mike