Remember that Ryzen is built on a process that is optimised for mobile applications. The frequencies it is being sold at are well above its optimal power effici

Remember that Ryzen is built on a process that is optimised for mobile applications. The frequencies it is being sold at are well above its optimal power efficiency, and the limited overclocking potential agrees with this. In the Anandtech forums there are some benchmarks of underclocked, undervolted Ryzen and the performance/W is frankly astonishing. Well beyond anything Intel produces, and yes that includes 10C 2.3GHz Xeons, even modern ones. Moreover, the consumer Zen parts have the local power plane regulators fused off. Now, I don't know if this is due to design bugs or product differentiation, but if they do have them enabled for Naples that is another big efficiency bump waiting to happen. TLDR: you can't extrapolate the performance of server parts based on desktop parts, because of different silicon profiles and server-specific power features.