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Square green ceramic processor with gold contact pads and silver heat spreader, SP5 socket form factor

AMD

AMD EPYC 9255 100-000000694 24-core 3.2 GHz server processor

SKU CH-91T5-19QXY MPN 100-000000694

24-core server processor with 3.2 GHz base clock, 48 threads, 128 MB L3 cache and DDR5-6400 12-channel memory support

  • NameEPYC 9255
  • CPU Socket TypeSocket SP5
  • # of Cores24-Core
  • # of Threads48
  • Operating Frequency3.2 GHz
  • Max Turbo Frequency4.3 GHz

Option EPYC 9255

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  • 24 cores and 48 threads handle parallel workloads efficiently
  • 2 GHz base with 4.3 GHz max turbo delivers responsive compute performance
  • 128 MB L3 cache reduces latency for data-intensive applications
  • 12-channel DDR5 6400 memory controller provides high bandwidth for large datasets
  • 128 PCIe 5.0 lanes enable fast connectivity for GPUs and storage

AMD EPYC 9255 24-core SP5 processor

The AMD EPYC 9255 is a 5th generation server processor built for the SP5 platform. It delivers 24 cores and 48 threads with a base clock of 3.2 GHz and a maximum turbo frequency of 4.3 GHz. This CPU targets data centres running AI inference, cloud services and enterprise workloads that demand high core density and memory bandwidth.

Installation notes for Socket SP5

The processor drops into a Socket SP5 motherboard without soldering, simplifying the physical install. A cooling solution is not included, so a compatible SP5 heatsink or liquid block must be sourced separately and mounted with the correct pressure. Ensure the motherboard BIOS supports 5th generation EPYC 9005 series CPUs before fitting the chip, otherwise the system will not post.

Pre-order checklist for your platform

Verify that your motherboard provides a Socket SP5 socket and a power delivery subsystem rated for a 200 W TDP. The integrated memory controller runs 12 channels of DDR5 at 6400 MT/s, so populate all channels with matched modules to achieve rated bandwidth. Confirm the chassis can accommodate the chosen cooler height and that the power supply delivers sufficient 12 V current for the full platform.

Highlights

  • 24 cores and 48 threads handle parallel workloads efficiently
  • 2 GHz base with 4.3 GHz max turbo delivers responsive compute performance
  • 128 MB L3 cache reduces latency for data-intensive applications
  • 12-channel DDR5 6400 memory controller provides high bandwidth for large datasets
  • 128 PCIe 5.0 lanes enable fast connectivity for GPUs and storage

Specifications

BrandAMD
SeriesAMD EPYC 9005
NameEPYC 9255
Model100-000000694
CPU Socket TypeSocket SP5
# of Cores24-Core
# of Threads48
Operating Frequency3.2 GHz
Max Turbo Frequency4.3 GHz
L3 Cache128MB
64-Bit SupportYes
Integrated Memory Controller SpeedDDR5 6400
Memory Channel12 Channel
PCI Express Revision5.0
Max # of PCI Express Lanes128
Thermal Design Power200W
Cooling DeviceCooling device not included - Processor Only
Shipping weight0.16 kg
Package size102 × 91 × 10 mm

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How can I verify the EPYC 9255 is running at its 3.2 GHz base frequency after installation?

Check the operating frequency in the BIOS hardware monitor or use a Linux tool such as lscpu to confirm the CPU reports 3.2 GHz base and 4.3 GHz max turbo under load.

What is included with the 100-000000694 processor and what must be purchased separately?

The box contains the 24-core EPYC 9255 processor only; a compatible SP5 socket cooler rated for 200 W TDP and DDR5-6400 memory modules must be bought separately.

Which memory configuration should I choose for the 12-channel memory controller on this EPYC 9255?

Populate all twelve DDR5 channels with identical DDR5-6400 modules to achieve maximum memory bandwidth and enable the integrated controller to run at its rated 6400 MT/s speed.

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