Name: HPE AMD EPYC 9555P - 64-core 3.2-3.4GHz Processor
Brand: HPE AMD
Availability: InStock

HPE AMD EPYC 9555P - 64-core 3.2-3.4GHz Processor brings server-grade performance to demanding datacenter workloads and was introduced as part of AMD's EPYC line devoted to high-density computing.

This HPE-branded AMD EPYC 9555P delivers 64 physical cores and 128 threads with a base clock of 3.2 GHz and boost frequencies up to 4.4 GHz, making it well suited for heavy multi-threaded applications and virtualization platforms.

The processor includes a substantial 256 MB of L3 cache and supports 64-bit operating modes, ensuring fast access to frequently used data and compatibility with modern server operating systems and enterprise software stacks.

Memory performance is a standout, with native support for DDR5-SDRAM at up to 6400 MHz across a dodeca-channel memory architecture and a maximum memory bandwidth of 576 GB/s, enabling data-intensive workloads to scale efficiently.

Connectivity and expansion are robust thanks to up to 128 PCIe lanes compliant with PCI Express 5.0, offering ample throughput for NVMe storage, high-speed networking, and accelerator cards commonly used in AI, analytics, and HPC environments.

With a thermal design power (TDP) of 360 W and a Socket SP5 form factor, the HPE AMD EPYC 9555P is designed for server chassis and cooling solutions that handle high sustained loads; note that it does not include on-board or discrete graphics.

Typical use cases include large-scale virtualization, database servers, high-performance computing (HPC), in-memory analytics, and cloud infrastructure where core density, memory bandwidth, and I/O scalability are critical.

Key selling points are the 64-core / 128-thread configuration, 256 MB L3 cache, PCIe 5.0 with 128 lanes, DDR5-6400 dodeca-channel memory support, and a 4.4 GHz boost—features that position this CPU as a top choice for enterprise and hyperscale servers.