It is widely known that Zen 2 is on the horizon, with a new generation of processors likely to be announced at Computex later this month. AMD has not kept this a secret. In fact, AMD recently reiterated that Zen 2 products will ship in the third quarter of this year, including both consumer desktop (Ryzen 3000 series) and server (EPYC) processors. In regards to the latter, a fresh leak gives us a sneak peek at the specs and performance of some of the offerings that AMD is readying.
To quickly recap, Zen 2 is the third generation of AMD's Zen microarchitecture, It is the first of the Zen series to utilize a 7-nanometer manufacturing process—current generation Zen+ parts are built on a 12nm manufacturing process, while first-gen Zen utilized a 14nm process node. The move to 7nm is expected to introduce better IPC (instructions per clock) performance, more cores, faster clocks, and improved power efficiency.
On the server side, the upcoming Zen 2-based EPYC lineup (codenamed Rome) will scale to 64 physical cores and 128 threads of compute muscle. AMD teased the performance of a 64-core/128-thread EPYC processor earlier this year, showing it outpacing two Intel Xeon Platinum 8180M processors, both of which are 28-core/56-thread CPUs, in the C-Ray benchmark. Obviously AMD is working with an advantage in core and thread counts, but the pitch from AMD is that this kind of top notch performance can be had from a single processor setup.
Fast forward to now and there are a couple of EPYC Rome processors that have showed up in SiSoft SANDRA's database. One is a 32-core/64-thread chip and the other is a 64-core/128-thread CPU, both based on Zen 2.
Starting with the 64-core/128-thread monster, the database entry (which has since been removed, though not before WCCFTech could snag a screenshot) indicated it was an engineering sample labeled ZX1406E2VJUG5_22/14_N. From that, we can extrapolate that it has a 1.4GHz base clock and 2.2GHz Turbo clock. Of course, being an ES chip, those clocks are very likely to be lower than what they will be on the final silicon.
When this entry was available, it ranked third in terms of the database's arithmetic scores. Factor in higher shipping clocks, and this could be a compelling product in the server market.
As for the 32-core/64-thread EPYC processor, it too showed up as an engineering sample, labeled ZS1711E3VIVG5_24/17_N. Based on that information, it was running with a 1.7GHz base clock and 2.4GHz boost clock, which is only a little bit faster than the 64-core/128-thread ES chip above.
What's going to be interesting is how all of AMD's product lines mesh with the Zen 2 stuff adding more cores and threads to the equation. For example, AMD's second-generation Threadripper processors already scale to 32 cores and 64 threads (Threadripper 2990WX). There are some key differences between Threadripper and EPYC, but it is interesting to see the overlap.