During AMD’s CES keynote, the company unveiled some of the details of its upcoming 3rd generation Ryzen processors, which are built on top of the Zen 2 architecture. We don’t have any independent benchmarks quite yet, of course, but the power figures comparing a Ryzen 3 processor to an Intel 9900K are nothing to sneeze at (note that these figures are coming from AMD, so get out your salt).
Also, in that same test, it showed the system level power. This includes the motherboard, DRAM, SSD, and so on. As the systems were supposedly identical, this makes the comparison CPU only. The Intel system, during Cinebench, ran at 180W. This result is in line with what we’ve seen on our systems, and sounds correct. The AMD system on the other hand was running at 130-132W.
If we take a look at our average system idle power in our own reviews which is around 55W, this would make the Intel CPU around 125W, whereas the AMD CPU would be around 75W.
Even assuming these figures are idealised, that’s still a pretty startling difference.