In short words: Team Red revealed that they have a couple of heavy processors coming out in the next couple of years. One has 96 cores intended for high-end general purpose workstations. The other is a 128-core monster for use in data centers running cloud-based applications. Both are based on TSMC’s 5nm process.
During its Accelerated Data Center keynote on Monday, AMD unveiled the roadmap for its next fourth generation Epyc silicon. AMD chief Lisa Su notes that the two HPC processors are targeted for enterprise and data center applications. Reuters notes that Meta (Facebook) simply participated AMD is a longtime partner of Microsoft (Azure), Amazon (AWS) and Alphabet (Google Cloud) and will be among the first companies to use the chips.
The new CPUs are expected to offer double the density and power efficiency while delivering 1.25x or more performance.
The first chip is codenamed “Genoa”. Designed for heavy and general processing, Genoa features 96 Zen 4 cores thanks to TSMC’s 5nm process and comes with DDR5 and PCIe 5.0 support. When it was announced in 2019, Genoa was silicon planned to land this year, but was delayed by ongoing global supply chain problems. Su said Genoa should start arriving in 2022. It didn’t have a more precise launch date, but since AMD has already sent samples, it should probably be before the year.
The second chipset, codenamed “Bergamo”, is designed with cloud-based data centers in mind. Silicon is still built on the same 5nm process, but AMD has optimized it for native cloud computing. As such, he designated the architecture as Zen 4c. At its core, Zen 4c is compatible and functionally the same as its cousin, but optimizes the cache hierarchy to allow for higher core / thread density.
Bergamo packs a whopping 128 Zen 4c cores on a single CPU. Like Genoa, it will also support DDR5 and PCIe 5.0, CXL 1.1, RAS, and Infinity Guard security. It will also be compatible with the socket (SP5) with Genoa. However, it should offer “breakthrough performance per socket”. Su said Bergamo’s silicon should start shipping in the first half of 2023.
So red team unveiled its third generation Milan-X server CPUs, which will have up to 768 MB of L3 cache. We should see those hitting the market in the first quarter of 2022.