Virtually all of the electrical energy put into a computer is turned into heat, right? Some of it comes out as visible light from the screen and some tiny portion of it is.. converted into information I guess? But generally a 180W computer is putting out very nearly 180W of thermal energy, as I understand it. My point is that laptops with 90W adapters can get too hot to comfortably touch, I think at 180W you're well…
This is true, it would take a fantastic cooling system to make burning 180W on your lap comfortable. However that doesn't make a 180W laptop useless. Firstly if you are charging it when not on your lap you may prefer the faster charging and the heat doesn't matter much if it is just sitting on a table. (Plus more than half of the energy is going into the batter rather than being expelled as heat). Secondly if you are…
If your processor only maxes up to 40w, it doesn't matter if the laptop supplies 200w or 1000w. It won't run any hotter.