AMD® EPYC™ 9455 Emb

The AMD EPYC 9455 Emb is a server processor with 48 cores and 96 threads, built on the Zen 5 architecture. It launched in Oct 2024. Clocks run from 3.15 GHz base to 4.4 GHz boost. A 256-MB L3 cache backs the cores (6.4 MB per core). It supports DDR5 memory. Rated TDP is 300 W. Notable platform capabilities: AVX-512, AMD-V (Hardware Virtualization), AMD SEV.

The AMD EPYC 9455 Emb scores 3,785 in single-core performance and 111,385 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 20,533 for overall performance, 77,699 for productivity performance, 68,075 for creator performance, 155,939 for engineering performance and 39,201 for gaming performance. Its multi-core throughput works out to 2,321 per core, 1,160 per thread and 371 per watt. Its computed efficiency index is 1,186. Its performance index is 254, so its overall performance is 154% 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 9455 Emb scores 506,585 in integer math, 372,689 in floating-point math, 1,811,237 in compression, 93,173 in cryptography, 9,814 in physics simulation, 153,060 in vector SIMD, 1,619 in the prime sieve and 201,469 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 760% above in integer math, 712% above in floating-point math, 694% above in compression, 711% above in cryptography, 800% above in physics simulation, 887% above in vector SIMD, 2,316% above in the prime sieve and 789% 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 9455 Emb has 48 physical cores and runs 96 logical threads. It runs 2 threads per core. It runs at a base clock of 3.15 GHz and boosts up to 4.40 GHz.

The AMD EPYC 9455 Emb is a server processor, belongs to the AMD EPYC family and uses the Zen 5 architecture. It launched in Oct 2024.

The AMD EPYC 9455 Emb has 3.75 MB of L1 cache, 48 MB of L2 cache and 256 MB of L3 cache. That adds up to about 307.8 MB of cache, or 6.41 MB per core. Each core has 1 MB of private L2 cache.

The AMD EPYC 9455 Emb has a 3-level cache hierarchy: L1 at 3.8 MB, L2 at 48 MB and L3 at 256 MB. L3 is the largest level and makes up about 83% of the cache listed here.

The AMD EPYC 9455 Emb supports DDR5 memory and uses 12 memory channels. It does not support DDR4 and LPDDR memory.

The AMD EPYC 9455 Emb does not include integrated graphics, so a discrete graphics card is required for display output.

The AMD EPYC 9455 Emb supports PCI Express 5.0.

The AMD EPYC 9455 Emb has a rated TDP of 300 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 9455 Emb is also identified by the model number 9455 and the SKU 9455 Emb.

Feex has recorded 50% of the specifications it tracks for the AMD EPYC 9455 Emb. 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: 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: Processor Number and Part Number.

Processors close to the AMD EPYC 9455 Emb in the Feex database, matched by socket, family, segment, architecture, core count, TDP and benchmark scores, include AMD EPYC 9455P, AMD EPYC 9475F, AMD EPYC 9535, AMD EPYC 9555 Emb and AMD EPYC 9555P.