They use upTDP (20w~24w). Also, you'd be surprised. Even while gaming, my current surface pro maintains 3.1 GHz and reaches 4.1 on short bursts. Look around th

They use upTDP (20w~24w). Also, you'd be surprised. Even while gaming, my current surface pro maintains 3.1 GHz and reaches 4.1 on short bursts. Look around the web, if you can keep the surface cool enough, they never PL (power limit) throttle unlike most other Intel -U based devices.