True - but building IP for Risc-V will likely go faster - primarily because it is open source, design tools are better and there are companies like TSMC that ar

True - but building IP for Risc-V will likely go faster - primarily because it is open source, design tools are better and there are companies like TSMC that are foundries and will make whatever you design. I first started working with Arm when it was stilled laid out by hand. It is a great little processor but in a way the licensing thing has retarded progress in certain areas. Back in the day it was an innovative business decision to license only but the world has changed. Arm was launched in 1985. It has had an extraordinary run. Supermicro tends to stick with tried and true so maybe Arm would be the most cost effective for them. However as you said the instruction set is not the deal breaker any longer - but expensive licenses and proprietary IP can be.