Zen (both Ryzen 2000 and 1000) is on a fairly low-power node, optimized for efficiency rather than clocks. Zen is pretty much comparable to Intel these days, i

Zen (both Ryzen 2000 and 1000) is on a fairly low-power node, optimized for efficiency rather than clocks. Zen is pretty much comparable to Intel these days, if not slightly better, but runs into a voltage wall much quicker. If you force your way into that wall they do pull a fair bit of power. The Ryzen 2000 chips have a smarter SpeedStep-type functionality than Intel does, it pretty much squeezes out all the OC performance from the chip while maintaining normal power management, while Intel (and Ryzen 1000) needs to manage voltages on a processor-wide basis, which eats more power.