IDF 2014 – Intel Core M: architecture, performance, 2-in-1 designs
The platform architecture is very similar to the previous Haswell based parts, but extensive effort has been made for reducing the power usage and maximizing the performance. The FIVR has improved efficiency, the Turbo Boost is more responsive, new C7+ state introduced and also the PCH can also throttle when it’s not needed.
One interesting technology implemented for the integrated GPU is DCC or Duty Control Cycle which is avoiding working at high leakage settings. For example to get the same performance, DCC chooses to work 80% at 500MHz than to work 100% at 400MHz. Same result but better battery life!
Intel DPTF actively monitors the case temperature of mobile devices to avoid spoiling the comfort of the user by being too hot. To avoid this, the system automatically adjust the PL1 and PL2 levels.