AMD® EPYC™ 9455P

The AMD EPYC 9455P is a server processor with 48 cores and 96 threads, built on the Zen 5 architecture (4 nm process). 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 (6.3 MB per core). It supports DDR5 memory. The chip drops into the SP5 socket and exposes PCIe 5.0 (128 lanes). Rated TDP is 300 W. Notable platform capabilities: AVX-512, AMD-V (Hardware Virtualization), AMD SEV.

The AMD EPYC 9455P scores 3,745 in single-core performance and 116,927 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 20,926 for overall performance, 81,246 for productivity performance, 71,051 for creator performance, 163,698 for engineering performance and 40,467 for gaming performance. Its multi-core throughput works out to 2,436 per core, 1,218 per thread and 390 per watt. Its computed efficiency index is 1,208. Its performance index is 259, so its overall performance is 159% 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 9455P scores 606,239 in integer math, 357,783 in floating-point math, 1,928,897 in compression, 115,403 in cryptography, 17,315 in physics simulation, 137,485 in vector SIMD, 1,107 in the prime sieve and 242,701 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 929% above in integer math, 680% above in floating-point math, 746% above in compression, 904% above in cryptography, 1,489% above in physics simulation, 786% above in vector SIMD, 1,552% above in the prime sieve and 971% 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 9455P 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 9455P is a server processor, belongs to the AMD EPYC family, uses the Zen 5 architecture, carries the codename Turin and is manufactured on a 4 nm process. It launched in Oct 2024.

The AMD EPYC 9455P has 48 MB of L2 cache and 256 MB of L3 cache. That adds up to about 304.0 MB of cache, or 6.33 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 9455P has a 2-level cache hierarchy: L2 at 48 MB and L3 at 256 MB. L3 is the largest level and makes up about 84% of the cache listed here.

The AMD EPYC 9455P supports DDR5 memory, uses 12 memory channels, runs memory at up to 6,000 MT/s and delivers up to 576.0 GB/s of memory bandwidth. It does not support DDR4 and LPDDR memory.

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

The AMD EPYC 9455P uses the SP5 socket, supports PCI Express 5.0 and provides up to 128 PCIe lanes.

The AMD EPYC 9455P 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 9455P is manufactured by TSMC. It launched at a price of $4,819.

The AMD EPYC 9455P is also identified by the model number 9455P and the SKU 100-000001563.

Feex has recorded 60% of the specifications it tracks for the AMD EPYC 9455P. 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: ISA Family and Market Status. Cache: L1 Cache (Total) and L4 Cache. Memory Support: ECC Memory. Platform & Compatibility: Package and Package Size. 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: Processor Number and Part Number.

Processors that use the same SP5 socket as the AMD EPYC 9455P and have the closest multi-core scores in the Feex database include AMD EPYC 9654P, AMD EPYC 9654, AMD EPYC 9535, AMD EPYC 9684X and AMD EPYC 9475F.