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Square green processor package with gold contacts and silver heat spreader, SP5 socket form factor

AMD

AMD EPYC 9555P 100-000001523 64-core 3.2 GHz server processor

SKU CH-1NQM-Z1J44 MPN 100-000001523

64-core server CPU with 3.2 GHz base, 4.4 GHz boost, 256 MB L3 cache, 128 PCIe 5.0 lanes, 12-channel DDR5 6400 support and 360 W TDP

  • Product nameEPYC 9555P
  • CPU cores64-Core
  • CPU socketSocket SP5
  • Maximum turbo clock4.4 GHz
  • TDP rating360 W
  • CPU threads128

Model EPYC 9555P

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  • 64 cores and 128 threads handle heavy parallel workloads
  • 2 GHz base clock with 4.4 GHz max turbo for responsive compute
  • 256 MB L3 cache reduces latency on large datasets
  • 12-channel DDR5 6400 memory controller feeds high bandwidth needs
  • 128 PCIe 5.0 lanes enable extensive I/O expansion

64-Core EPYC 9555P for dense compute

The AMD EPYC 9555P is a 64-core server processor running at 3.2 GHz base and 4.4 GHz max turbo with 128 threads. It targets data-centre operators running AI inference, cloud services or enterprise workloads that demand high core density in a single socket. The 256 MB L3 cache supports large working sets without frequent memory access.

Socket SP5 platform with 12-channel DDR5

The CPU fits the SP5 socket and provides 12 memory channels running DDR5 at 6400 MT/s. It also exposes 128 lanes of PCI Express 5.0 for GPU accelerators, high-speed networking or storage arrays. No cooling device is included, so a compatible heatsink or liquid loop must be sourced separately for the 360 W thermal envelope.

360 W TDP requires robust cooling

At the rated 360 W thermal design power the processor will move significant heat under sustained load. A server chassis with high-airflow fans or a liquid-cooling distribution unit is needed to keep temperatures stable. Acoustic output will depend entirely on the chosen cooler and chassis fan curves rather than the processor itself.

How it compares

Measured against everything we stock in Server Processors, at today’s prices. Recalculated every night.

Price $4,887.99
Pricier than about 86% of the 621 comparable items (median $1,561.99).
CPU cores 64-Core
Higher than about 83% of the 386 comparable items (median 24).
Maximum turbo clock 4.4 GHz
Higher than about 82% of the 327 comparable items (median 3.9 GHz).

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Specifications

Product
Brand nameAMD
Product lineAMD EPYC 9005
Model name100-000001523
Product nameEPYC 9555P
Performance
Working frequency3.2 GHz
Processor
CPU cores64-Core
CPU socketSocket SP5
Maximum turbo clock4.4 GHz
TDP rating360 W
CPU threads128
Level 3 cache256 MB
64-bit capableYes
Maximum PCIe lanes128
Memory
Supported memory speedDDR5 6400
Channel configuration12 Channel
Ports & slots
PCIe generation5.0
Size & build
Shipping weight0.23 kg
Package size127 × 127 × 38 mm
In the box
Included coolerNot included - Processor Only

Other versions of this model

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Questions about this item

At what thermal design power does the EPYC 9555P hit its limit under sustained load?

The EPYC 9555P has a 360W thermal design power, which is the sustained power limit the cooling solution must handle continuously.

How much heat and noise should I expect from the EPYC 9555P running all day at 360W?

At 360W TDP the processor will generate substantial heat; a server-grade cooler rated for 360W or higher is required, and fan noise will depend entirely on that cooler and chassis airflow.

What memory and motherboard must I already have for the EPYC 9555P to work?

You need a motherboard with Socket SP5, 12-channel DDR5-6400 memory support, and a BIOS that recognises the 5th Gen EPYC 9005 series.

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