AMD EPYC 9554P 64c/128t 3.1GHz-3.75GHz 360W (100-000000804)

AMD EPYC 9554P Server CPU

Positioning within the EPYC 9004 lineup

AMD EPYC 9554P is a Zen 4–based EPYC processor designed for high-performance single-socket servers on the SP5 platform. As part of the P-series, it concentrates the full EPYC memory and I/O capabilities into one socket, targeting scale-out architectures that favor powerful, standardized 1P nodes. Within the EPYC 9004 “Genoa” family, the 9554P sits at the high end of single-socket offerings, combining a large core count with relatively strong per-core frequency.

Core configuration and execution characteristics

The processor provides 64 cores and 128 threads, operating at a 3.1 GHz base frequency with boost clocks up to 3.75 GHz. This configuration delivers a balanced mix of sustained multi-threaded throughput and responsive per-core performance. In production environments, EPYC 9554P performs well in mixed workloads that include both highly parallel tasks and latency-sensitive components.

Compared to lower-frequency high-core-count models, the 9554P offers improved per-core responsiveness, which can benefit enterprise applications, middleware, and virtualized platforms where some execution paths do not scale perfectly across all threads.

Cache architecture and workload behavior

EPYC 9554P includes 256 MB of L3 cache, providing a solid cache-to-core ratio for general-purpose enterprise workloads. This cache capacity helps reduce memory access latency for frequently used data structures and improves performance consistency when multiple workloads run concurrently.

In virtualized and containerized environments, the shared L3 cache contributes to smoother behavior under load by mitigating cache contention between tenants, especially during peak utilization periods.

Memory subsystem and bandwidth advantages

The processor supports DDR5-4800 memory across 12 memory channels, delivering very high aggregate memory bandwidth in a single-socket configuration. This is a major advantage of the EPYC 9004 platform, allowing EPYC 9554P to handle memory-intensive workloads, large in-memory datasets, and high VM density without requiring a second socket.

Balanced DIMM population across all channels is essential to fully exploit this bandwidth and maintain predictable latency under sustained load.

I/O capabilities and system integration

EPYC 9554P supports PCI Express 5.0 with up to 128 lanes available from a single socket. This enables dense NVMe storage configurations, next-generation networking, and accelerator connectivity without external PCIe switches. For infrastructure architects, this simplifies system design and allows flexible combinations of storage and networking tailored to demanding enterprise workloads.

Power envelope and deployment considerations

EPYC 9554P is rated at 360 W TDP, reflecting its combination of high core count, relatively high operating frequencies, and modern process technology. Deployment requires enterprise-grade cooling and chassis designed for sustained high power density. In properly engineered platforms, the processor maintains stable performance under continuous operation, which is critical for production environments.

Ideal use cases and selection guidance

EPYC 9554P is best suited for organizations building powerful single-socket servers where both throughput and per-core performance matter. Typical use cases include virtualization hosts optimized for 1P deployment, container orchestration nodes with mixed workloads, enterprise application and middleware servers, and scale-out cloud infrastructure requiring consistent, predictable performance. For workloads dominated purely by extreme parallelism, higher core-count EPYC models may offer better throughput. For cache-dominant scenarios, X-series processors may be more effective. EPYC 9554P is an excellent choice when the goal is to balance core density, frequency, memory bandwidth, and I/O capacity in a single-socket Zen 4 platform.