The article drops some hints that the 10nm parts aren't stable at desktop power levels. Normally process shrink -> reduced power -> more power budget -> higher

The article drops some hints that the 10nm parts aren't stable at desktop power levels. Normally process shrink -> reduced power -> more power budget -> higher frequency. The power savings gives you room to push frequency (and power) back up. But it's not working out for 10nm. They're more efficient than 14nm, but they can't spend the energy they're saving on performance.