Last evening, the official presentation of the AMD EPYC 9004 (Genoa) server chips based on the Zen 4 microarchitecture took place. In the new processors, Lisa Su’s team not only increased the maximum number of x86 cores, but also introduced support for DDR5 RAM and a high-speed PCI Express 5.0 interface. Together with them, the Socket SP5 platform debuted.
Under the cover of the CPU EPYC 9004 (Genoa) are up to 13 individual dies: a dozen 5nm CCD chiplets, familiar from the desktop Ryzen 7000, and a 6nm I / O chip IOD. The equipment of the new products includes up to 96 Zen 4 cores, up to 384 MB of L3 cache, a 12-channel DDR5-4800 ECC controller with a theoretical bandwidth of 460 GB / s, 128-lane PCI-E 5.0 controllers and 64 CXL 1.1+ lanes. The standard TDP level is from 200 to 360 W, depending on the model.
Of the features of the new processors, AMD also notes support for AVX-512 instructions, up to 6 TB of RAM per socket, and a 14% IPC increase relative to the CPU EPYC Milan (Zen 3). Together with the increased number of cores, this provides the top EPYC 9004 with more than a twofold advantage over the closest Intel competitors. The results of official benchmarks can be found on the slides below.
In total, AMD has 18 EPYC 9004 (Genoa) processors ready for release, ranging from 16 to 96 Zen 4 cores. Models with the “F” suffix have relatively high frequencies, and chips with the “P” mark do not support dual-socket configurations. The main characteristics and recommended prices of new products are given in the table.
Next year, AMD has scheduled the release of several more families of server processors. There will be EPYC Bergamo chips with up to 128 Zen 4c cores, EPYC Genoa-X processors, in which the L3 cache will exceed 1 GB, and EPYC Sienna with an eye to increased energy efficiency.