As you know, the departure from AMD of the main specialist for the development of Zen architecture Jim Keller took place a few months before the release of the serial Ryzen CPUs on the market, but the current managers repeatedly stressed that the first results of this announcement are quite satisfied. In fact, the goal of speeding up performance against its predecessors could even be blocked: Ryzen processors ensured an increase in the number of teams processed per clock cycle by 50% instead of the planned 40%.
At the event Stifel Nicolaus 2017 Technology Internet & Media Conference, Jim Anderson , who now holds the position of senior vice president, admitted that his "couple of years ago" attracted the opportunity to work on the creation of processors with Zenarchitecture , and this Was one of the main reasons for his transition to work in AMD. At Intel, as Anderson admits, he also dealt with the development of processor architectures, and "high-performance processors" are his hobby. The more interesting it was to help Intel's main competitor to create a decent processor, as Anderson explains.
Moreover, according to Jim, if we consider the increase in performance in relation to power consumption, then the Zen architecture and other attendant factors allowed Ryzen processors to improve their performance by 270% relative to their predecessors.