AMD announces the availability of 4th generation EPYC server CPUs. These CPUs contain up to 96 cores based on Zen 4 architecture and support PCIe 5.0 and DDR5. Later on, Zen 4c processors with up to 128 cores and 3D V-Cache variants will follow.
The AMD EPYC 9004 Processors based Zen 4 . engineering, which was previously introduced by AMD in its Ryzen 7000 desktop CPUs. With this said, the processors are produced on TSMC’s 5nm process, as previous EPYC Milan CPUs were made at 7nm. According to AMD, the new architecture is good for improving IPC by 14 percent, including from an improved front-end, loading/storage and expect branch.
The new EPYC CPUs consist of several Zen 4 chipsets, which, as with previous generations, contain eight cores. However, AMD is increasing the maximum number of chips per EPYC 9004 processor to twelve. This means that the top model has a total of 96 cores, while previous EPYC processors had a maximum of 64 cores. AMD also offers variants with 84, 64, 48, 32, 24 and 16 cores. In total, the company comes with eighteen different models, including the F models with higher clocks.
As with the previous generation of EPYC processors, AMD places the processors in three categories: Core Performance, Core Density, and Balanced and Enhanced. The first category includes F models, which have relatively high clock speeds. Models with 96, 64, and 48 cores fall into the Core Density category and other variants with 16 to 32 cores fall into the third category. This “balanced” category aims to strike a balance between performance and costs.
EPYC 9004 CPUs get 128 PCIe 5.0 slots and 12 DDR5 channels, with DDR5 memory support up to 6TB per socket. Each Zen 4-core also has a 1MB L2 cache and each chip has a 32MB L3 cache, with a maximum of 384MB in the case of 96-core CPUs. CPUs will receive CXL 1.1 support for memory expansion.
Genoa is offered by cloud service providers such as Microsoft and Oracle and manufacturers such as Dell, HPE, Lenovo, and Supermicro. It is the first series of EPYC processors based on the Zen 4 architecture offered by AMD. EPYC “Bergamo” treatments will also follow later. It is optimized for cloud applications and has Zen 4c architecture. AMD previously confirmed These processors contain a maximum of 128 Zen 4c cores. Genoa-X CPUs are also on the roadmap. These pertain to EPYC 9004 processors with 3D V-Cache, as AMD previously released in its previous generation of server processors. The Sienna series of Zen 4 CPUs are also planned for high-end communications and applications.
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