AMD® EPYC™ 9655

The AMD EPYC 9655 is a server processor with 96 cores and 192 threads, built on the Zen 5 architecture (4 nm process). It launched in Oct 2024. Clocks run from 2.6 GHz base to 4.5 GHz boost. A 384-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 400 W. Notable platform capabilities: AVX-512, AMD-V (Hardware Virtualization), AMD SEV.

The AMD EPYC 9655 scores 3,847 in single-core performance and 156,110 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 24,506 for overall performance, 106,857 for productivity performance, 92,785 for creator performance, 218,554 for engineering performance and 50,569 for gaming performance. Its multi-core throughput works out to 1,626 per core, 813 per thread and 390 per watt. Its computed efficiency index is 1,225. Its performance index is 304, so its overall performance is 204% 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 9655 scores 1,139,161 in integer math, 662,958 in floating-point math, 3,271,896 in compression, 210,555 in cryptography, 25,947 in physics simulation, 203,285 in vector SIMD, 1,598 in the prime sieve and 439,682 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 1,834% above in integer math, 1,344% above in floating-point math, 1,335% above in compression, 1,733% above in cryptography, 2,280% above in physics simulation, 1,211% above in vector SIMD, 2,285% above in the prime sieve and 1,841% 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 9655 has 96 physical cores and runs 192 logical threads. It runs 2 threads per core. It runs at a base clock of 2.60 GHz and boosts up to 4.50 GHz. Its clock multiplier is unlocked for overclocking.

The AMD EPYC 9655 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 9655 has 96 MB of L2 cache and 384 MB of L3 cache. That adds up to about 480.0 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 9655 has a 2-level cache hierarchy: L2 at 96 MB and L3 at 384 MB. L3 is the largest level and makes up about 80% of the cache listed here.

The AMD EPYC 9655 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 9655 does not include integrated graphics, so a discrete graphics card is required for display output.

The AMD EPYC 9655 uses the SP5 socket and supports PCI Express 5.0.

The AMD EPYC 9655 has a rated TDP of 400 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 9655 is manufactured by TSMC. It launched at a price of $11,852.

The AMD EPYC 9655 is also identified by the model number 9655 and the SKU 100-000000674.

Feex has recorded 60% of the specifications it tracks for the AMD EPYC 9655. 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: 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: Processor Number and Part Number.

Processors that use the same SP5 socket as the AMD EPYC 9655 and have the closest multi-core scores in the Feex database include AMD EPYC 9845, AMD EPYC 9655P, AMD EPYC 9965, AMD EPYC 9755 and AMD EPYC 9575F.