I definitely don’t know. I have had no opportunity to physically use a Framework laptop. I am only speaking about what I know from the images on their website.
Or do you mean the MacBook Air? These later model Airs don’t have fans, and that means the aluminum gets really, really hot. The CPU temperature readouts get up to 170°F. It’s bonkers.
The under panel aluminum gets really hot, which in turn dissipates into my leg muscles while it is on my lap. I guess that makes the heat dissipation good (enough?) since the CPU doesn’t get worse than 170°F. It is honestly just pretty awful.