Hottest Macbook CPUs

[Vazkor]

Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_2_1 like Mac OS X; it-it) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8C148 Safari/6533.18.5)

Hi ppl, we all know macbooks can be pretty hot and, as a consequence, noisy but i've also read around some precise info about CPUs and watt consumption.
What is actually the Macbook which run less warm of the bunch?

 

[Vazkor]

Wirelessly posted (iPhone: Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_2_1 like Mac OS X; it-it) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8C148 Safari/6533.18.5)

Sooo the Air has a TDP of 20w, MBP dual core cpus 35w and quad core 45w ... that's a lot more.