AMD® EPYC™ 9555

The AMD EPYC 9555 is a server processor with 64 cores and 128 threads, built on the Zen 5 architecture (4 nm process). It launched in Oct 2024. Clocks run from 3.2 GHz base to 4.4 GHz boost. A 256-MB L3 cache backs the cores (5.0 MB per core). It supports DDR5 memory. The chip drops into the SP5 socket and exposes PCIe 5.0. Rated TDP is 360 W. Notable platform capabilities: AVX-512, AMD-V (Hardware Virtualization), AMD SEV.

The AMD EPYC 9555 has 64 physical cores and runs 128 logical threads. It runs 2 threads per core. It runs at a base clock of 3.20 GHz and boosts up to 4.40 GHz.

The AMD EPYC 9555 is a server processor, belongs to the AMD EPYC family, uses the Zen 5 architecture and is manufactured on a 4 nm process. It launched in Oct 2024.

The AMD EPYC 9555 has 64 MB of L2 cache and 256 MB of L3 cache. That adds up to about 320.0 MB of cache, or 5.00 MB per core. Each core has 1 MB of private L2 cache. Feex has no recorded L1 cache size for this processor.

The AMD EPYC 9555 has a 2-level cache hierarchy: L2 at 64 MB and L3 at 256 MB. L3 is the largest level and makes up about 80% of the cache listed here.

The AMD EPYC 9555 supports DDR5 memory, uses 12 memory channels, runs memory at up to 6,400 MT/s and delivers up to 614.4 GB/s of memory bandwidth. It does not support DDR4 and LPDDR memory.

The AMD EPYC 9555 does not include integrated graphics, so a discrete graphics card is required for display output.

The AMD EPYC 9555 uses the SP5 socket and supports PCI Express 5.0.

The AMD EPYC 9555 has a rated TDP of 360 W.

Instruction sets, security, virtualization, AI acceleration and OS readiness. Features are listed as supported, explicitly not supported, or not recorded; a feature that is not recorded is not the same as unsupported.

The AMD EPYC 9555 is manufactured by TSMC. It launched at a price of $9,826.

Feex has recorded 40% of the specifications it tracks for the AMD EPYC 9555. Values Feex does not hold are shown as "Not recorded" rather than estimated.

Not recorded: Core Configuration: Performance Cores, Efficiency Cores, Hybrid Architecture, All-Core Boost and Unlocked Multiplier. Architecture & Generation: Codename, ISA Family and Market Status. Cache: L1 Cache (Total) and L4 Cache. Memory Support: ECC Memory. Platform & Compatibility: Package, Package Size and PCIe Lanes. Power & Thermals: Base Power, Maximum Turbo Power, Configurable TDP (Min), Configurable TDP (Max), Max Junction Temperature and Tcase. Physical & Manufacturing: Transistor Count, Die Size and Die Count. Naming & Aliases: Normalized Name, SKU, Model Number, Processor Number and Part Number. Performance: single-core and multi-core ratings and all computed performance metrics.

Processors close to the AMD EPYC 9555 in the Feex database, matched by socket, family, segment, architecture, core count, TDP and benchmark scores, include AMD EPYC 9555P, AMD EPYC 9555 Emb, AMD EPYC 9575F, AMD EPYC 9535 and AMD EPYC 9845.