[adrianN]

> Laptops are usually not used for the kind of tasks that keep a CPU fully loaded for several minutes or hours at a time.

Web developers work hard to change this. Browsing without an adblocker and with Javascript enabled is often enough.

[j-c-hewitt]

Right. I get the sense that most developers browse with adblock on, but the average user experience is for their computer to be effectively running Prime 95 during regular web browsing.