3 ms·
I think they got it backwards and meant highest performance per watt or lowest wattage per performance.
by mkesper 3y ago
I think they got it backwards and meant highest performance per watt or lowest wattage per performance.
- rbanffy 3y agoLowest performance per watt has been the domain of x86 for a while now ;-) Where they shone has always been highest single-thread performance per capex dollar (not necessarily per opex, which is highly influenced by power consumption). When you add everything, the CPU is a relatively minor part of the server - a lot of energy is going to storage, memory, networking and other non-application activities, as well as memory and vector pipelines in GPUs (often a lot more than whatever goes into the CPU). Being less burdened by compatibility, ARM is in a much better place WRT performance per watt. I expect RISC-V to be in a similar position soon.