AMD® EPYC™ 4345P

The AMD EPYC 4345P is a server processor with 8 cores and 16 threads, built on the Zen 5 architecture (4 nm process). It launched in May 2025. Clocks run from 3.8 GHz base to 5.5 GHz boost. A 32-MB L3 cache backs the cores (5.0 MB per core). It supports DDR5 memory. The chip drops into the AM5 socket and exposes PCIe 5.0 (28 lanes). Rated TDP is 65 W.

The AMD EPYC 4345P scores 4,408 in single-core performance and 36,123 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 12,619 for overall performance, 29,651 for productivity performance, 27,802 for creator performance, 37,026 for engineering performance and 22,255 for gaming performance. Its multi-core throughput works out to 4,515 per core, 2,258 per thread and 556 per watt. Its computed efficiency index is 1,565. Its performance index is 156, so its overall performance is 56% 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 4345P scores 123,774 in integer math, 74,255 in floating-point math, 421,490 in compression, 23,313 in cryptography, 2,583 in physics simulation, 31,663 in vector SIMD, 167 in the prime sieve and 46,238 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 110% above in integer math, 62% above in floating-point math, 85% above in compression, 103% above in cryptography, 137% above in physics simulation, 104% above in vector SIMD, 149% above in the prime sieve and 104% 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 4345P has 8 physical cores and runs 16 logical threads. It runs 2 threads per core. It runs at a base clock of 3.80 GHz and boosts up to 5.50 GHz.

The AMD EPYC 4345P 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 May 2025.

The AMD EPYC 4345P has 8 MB of L2 cache and 32 MB of L3 cache. That adds up to about 40.0 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 4345P has a 2-level cache hierarchy: L2 at 8 MB and L3 at 32 MB. L3 is the largest level and makes up about 80% of the cache listed here.

The AMD EPYC 4345P supports DDR5 memory, uses 2 memory channels, runs memory at up to 5,600 MT/s and delivers up to 89.6 GB/s of memory bandwidth. It does not support DDR4 and LPDDR memory.

The AMD EPYC 4345P does not include integrated graphics, so a discrete graphics card is required for display output.

The AMD EPYC 4345P uses the AM5 socket, supports PCI Express 5.0 and provides up to 28 PCIe lanes.

The AMD EPYC 4345P has a rated TDP of 65 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 4345P is manufactured by TSMC. It launched at a price of $329.

Feex has recorded 55% of the specifications it tracks for the AMD EPYC 4345P. 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 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: Normalized Name, SKU, Model Number, Processor Number and Part Number.

Processors that use the same AM5 socket as the AMD EPYC 4345P and have the closest multi-core scores in the Feex database include AMD Ryzen 7 7700X, AMD Ryzen 7 9700F, AMD Ryzen 7 9700X, AMD Ryzen 7 PRO 9745 and AMD Ryzen 7 PRO 7745.