AMD at a special media event titled "together we advance_data centers," formally launched its 4th generation EPYC "Genoa" server processors based on the "Zen 4" microarchitecture. These processors debut an all new platform, with modern I/O connectivity that includes PCI-Express Gen 5, CXL, and DDR5 memory. The processors come in CPU core-counts of up to 96-core/192-thread. There are as many as 18 processor SKUs, differentiated not just in CPU core-counts, but also the way the the cores are spread across the up to 12 "Zen 4" chiplets (CCDs). Each chiplet features up to 8 "Zen 4" CPU cores, depending on the model; up to 32 MB of L3 cache, and is built on the 5 nm EUV process at TSMC. The CCDs talk to a centralized server I/O die (sIOD), which is built on the 6 nm process.

The processors AMD is launching today are the EPYC "Genoa" series, targeting general purpose servers, although they can be deployed in large cloud data-centers, too. To large-scale cloud providers such as AWS, Azure, and Google Cloud, AMD is readying a different class of processor, codenamed "Bergamo," which is plans to launch later. In 2023, the company will launch the "Genoa-X" line of processor for technical-compute and HPC applications, which benefit from large on-die caches, as they feature the 3D Vertical Cache technology. There will also be "Siena," a class of EPYC processors targeting the telecom and edge-computing markets, which could see an integration of more Xilinx IP.