Originally Posted by kanebear
If you're a Mac user, it's more heat than you're used to. If you're an Intel user or do both, the Apple runs cooler than some Intels.
so, using intel based IBM T41, 42 and 43, I would put the heat that is coming off the bottom of the thinkpads at about, 15% of that coming off the bottom of the macbookpro.
This is based on the test, putting hand on IBM, and can barely say there is much heat. Putting hand on the bottom of the MBP and saying, ouch get your hand away from there!