AMD has officially announced the EPYC 4005 series, codenamed ´Grado´, bringing Zen 5 architecture to servers through the Socket AM5 package. Designed with enterprise efficiency in mind, these processors feature core counts up to 16-core/32-thread configurations. This aligns neatly with the 16-core licensing requirement for Windows Server 2005 Datacenter Edition, allowing organizations to optimize their software budgets and maximize hardware utilization in dedicated server scenarios. The new chips are positioned to deliver superior value against Intel Xeon E-2400 and Intel 6300 series processors, which are limited to 8 performance cores and less optimal for similar licensing models.
On the technical front, the ´Grado´ silicon mirrors the ´Granite Ridge´ multi-chip module found in Ryzen 9000 series desktop CPUs. The architecture is built on two 4 nm Zen 5 core complex dies (CCDs), accompanied by a 6 nm I/O die. A major improvement over the previous generation, ECC memory support is now fully unlocked on the I/O die, and maximum memory speeds have been increased from DDR5-5200 to DDR5-5600. The platform supports up to 192 GB of error-correcting ECC DDR5 memory, distributed across a two-channel (four sub-channel) memory interface for flexible deployment in a variety of server roles. The Zen 5 CPU cores themselves are identical in feature set to those in Granite Ridge client desktops and the Turin server family, including a complete 512-bit data path for the AVX-512 instruction set, which enhances compute-heavy workloads.
The EPYC 4005 ´Grado´ lineup offers a range of models varying between 6-core/12-thread and 16-core/32-thread options, catering to diverse server workloads and multi-tenant environments. These chips deliver not just elevated raw performance, but strong efficiency for virtualization and hosted services, where maximizing core count per license dollar is critical. AMD´s strategic move with the EPYC 4005 series positions it as a compelling alternative to existing Intel Xeon server chips, signaling ongoing competition and innovation in the enterprise processor market.
