I wouldn't worry about internal heat damage so much. With the development of thin and passively cooled (i.e. chassis-as-heatsink) devices, human skin is becomin

I wouldn't worry about internal heat damage so much. With the development of thin and passively cooled (i.e. chassis-as-heatsink) devices, human skin is becoming the temperature limiter[0]. Many chips are "...capable of running at up to 100°C without any reliability problems", but your skin is normally only 37°C! WRT. YouTube vs. downloads, WiFi (all RF, really) produces more heat than you think and GPU's have come a long way in power/heat savings! [0]: http://techreport.com/review/26377/a-first-look-at-amd-mullins-mobile-apu http://techreport.com/review/26377/a-first-look-at-amd-mulli...