From Hot Hardware comes a series of bench tests of the new processor:

"When you consider the fact that both Yonah and Merom both are built on Intel's 65nm process and that Merom has an additional 2MB of L2 cache, along with EM64T support, Intel's design engineering triumph with Core 2 Duo becomes crystal clear. Intel's Mobile Core 2 Duo offers more processing power, capacity, features, and does so at power parity versus their legacy mobile Core Duo architecture."

Read on at Hot Hardware

The second review from Legit Reviews is a little more practical as they be

"With everything running fine with BIOS A00 we went ahead and used the Dell XPS M1710 Special Edition Formula Red gaming notebook for our benchmarking as it is the only notebook we have that features the 512MB NVIDIA GeForce Go 7900 GTX video card inside and we didn't want to be GPU limited during our testing. The other choice we had to go with was the Clevo M570U and while it ran the Core 2 Duo processor T7600 without any issues it only had a 256MB NVIDIA GeForce Go 7900 GTX, so we went with the Dell."

Read on at Legit Reviews

Overall, it looks like the new Core 2 DUO is a winner all around. Might have to snag me one of those CPU's down the road for a quick upgrade, or I can just buy a cooler laptop with it built in. Decisions! Decisions!