AMD® EPYC™ 9555 Emb

The AMD EPYC 9555 Emb is a server processor with 64 cores and 128 threads, built on the Zen 5 architecture. 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 (5.1 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 Emb scores 3,757 in single-core performance and 133,832 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 22,423 for overall performance, 92,251 for productivity performance, 80,370 for creator performance, 187,365 for engineering performance and 44,729 for gaming performance. Its multi-core throughput works out to 2,091 per core, 1,046 per thread and 372 per watt. Its computed efficiency index is 1,182. Its performance index is 278, so its overall performance is 178% above the Intel Core i5-12400 (index 100). Each bar shows the score as a share of a reference ceiling, which is the larger of the 99th-percentile score across the Feex CPU database and a fixed baseline.

Scores for individual PassMark CPU Mark test categories. Higher is better. These are measured test scores, not computed from the single-core and multi-core ratings.

In the individual workload tests the AMD EPYC 9555 Emb scores 788,775 in integer math, 499,287 in floating-point math, 2,655,279 in compression, 139,490 in cryptography, 14,296 in physics simulation, 205,271 in vector SIMD, 1,254 in the prime sieve and 287,739 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 1,239% above in integer math, 988% above in floating-point math, 1,064% above in compression, 1,114% above in cryptography, 1,212% above in physics simulation, 1,224% above in vector SIMD, 1,772% above in the prime sieve and 1,170% above in sorting. Each bar shows the score as a share of that workload's reference ceiling, the larger of the 99th-percentile score across CPUs with a recorded value and a fixed baseline.

The AMD EPYC 9555 Emb 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. Its clock multiplier is unlocked for overclocking.

The AMD EPYC 9555 Emb is a server processor, belongs to the AMD EPYC family, uses the Zen 5 architecture and carries the codename Turin. It launched in Oct 2024.

The AMD EPYC 9555 Emb has 5 MB of L1 cache, 64 MB of L2 cache and 256 MB of L3 cache. That adds up to about 325.0 MB of cache, or 5.08 MB per core. Each core has 1 MB of private L2 cache.

The AMD EPYC 9555 Emb has a 3-level cache hierarchy: L1 at 5 MB, L2 at 64 MB and L3 at 256 MB. L3 is the largest level and makes up about 79% of the cache listed here.

The AMD EPYC 9555 Emb supports DDR5 memory and uses 12 memory channels. It does not support DDR4 and LPDDR memory.

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

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

The AMD EPYC 9555 Emb 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 Emb is also identified by the model number 9555.

Feex has recorded 53% of the specifications it tracks for the AMD EPYC 9555 Emb. Values Feex does not hold are shown as "Not recorded" rather than estimated.

Not recorded: Core Configuration: Performance Cores, Efficiency Cores, Hybrid Architecture and All-Core Boost. Architecture & Generation: ISA Family and Market Status. Cache: L4 Cache. Memory Support: Memory Bandwidth, ECC Memory and Max Memory Speed. 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, Die Count, Foundry and Launch Price. Naming & Aliases: SKU, Processor Number and Part Number.

Processors that use the same SP5 socket as the AMD EPYC 9555 Emb and have the closest multi-core scores in the Feex database include AMD EPYC 9565, AMD EPYC 9555P, AMD EPYC 9745, AMD EPYC 9J14 and AMD EPYC 9475F.