As a part of at the moment’s AMD’s 2022 Monetary Analyst Day, the corporate is providing a brief, high-level replace on their forthcoming Zen 4 CPU structure. This data is being divulged as a part of the corporate’s bigger Zen structure roadmap, which at the moment is being prolonged to announce Zen 5 for 2024.
The largest information right here is that AMD is, for the primary time, disclosing their IPC expectations for the brand new structure. Addressing some post-Computex questions round IPC expectations, AMD is revealing that they count on Zen 4 to supply an 8-10% IPC uplift over Zen 3. The preliminary Computex announcement and demo appeared to indicate that the majority of AMD’s efficiency beneficial properties had been from clockspeed enhancements, so AMD is working to answer that with out displaying an excessive amount of of their hand months out from the product launches.
This makes up a great chunk of AMD’s total >15% anticipated enchancment in single-threaded efficiency, which was beforehand disclosed at Computex and basically stays unchanged. That mentioned, AMD is strongly emphasizing the “higher than” facet of that efficiency estimate. At this level AMD can’t get overly particular since they haven’t locked down closing clockspeeds, however as we’ve seen with their Computex demos, peak clockspeeds of 5.5GHz (or extra) are at present on the desk for Zen 4.
AMD can also be speaking a bit extra about energy and effectivity expectations at the moment. At this level, AMD is projecting a >25% improve in performance-per-watt with Zen 4 over Zen 3 (based mostly on desktop 16C chips working CineBench). In the meantime the general efficiency enchancment stands at >35%, little question making the most of each the higher efficiency of the structure per-thread, and AMD’s beforehand disclosed greater TDPs (that are particularly helpful for uncorking extra efficiency in MT workloads). And sure, these are horrible graphs.
Lastly, AMD is confirming that there will probably be V-Cache outfitted Zen 4 SKUs inside their processor lineup. No particular SKUs are being introduced at the moment, however AMD is reiterating that V-Cache was not only a one-off experiment for the corporate, and that they are going to be using the die stacked L3 cache on some Zen 4 chips as effectively.
