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

AMD

AMD 100-000001443 EPYC 9755 server processor 128-core 2.7 GHz 512MB L3

SKU CH-ZVP4-3CVE4 MPN 100-000001443

128-core server CPU with 2.7 GHz base clock, 4.1 GHz boost, 512 MB L3 cache, 12-channel DDR5-6400 support and 128 PCIe 5.0 lanes

  • Product nameEPYC 9755
  • CPU cores128-Core
  • CPU socketSocket SP5
  • Maximum turbo clock4.1 GHz
  • TDP rating500 W
  • CPU threads256

Model EPYC 9755

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  • 128 cores and 256 threads handle massive parallel workloads
  • 7 GHz base and 4.1 GHz boost deliver high single-thread speed
  • 512 MB L3 cache reduces latency for data-intensive tasks
  • 12-channel DDR5 6400 memory controller maximises bandwidth
  • 128 PCIe 5.0 lanes enable extensive I/O expansion

AMD EPYC 9755 128-Core Server Processor

The AMD EPYC 9755 is a 5th Generation server processor built for Socket SP5 platforms. It delivers 128 cores and 256 threads with a base clock of 2.7 GHz and a max turbo frequency of 4.1 GHz. A 512 MB L3 cache supports high-throughput workloads.

Suits dense AI and cloud compute.

This processor targets data centres running AI inference, cloud services, and enterprise applications needing maximum per-server performance. Its 500 W TDP and 128 PCIe 5.0 lanes demand robust cooling and power infrastructure. Buyers needing lower thermal output or fewer cores should consider other options.

512 MB L3 cache drives high hit rates

The large 512 MB L3 cache provides excellent hit rates in short access time, improving system performance for memory-intensive workloads. Twelve DDR5 6400 memory channels feed the 128 cores. Cooling device is not included.

How it compares

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

Price $4,086.99
Pricier than about 82% of the 621 comparable items (median $1,561.99).
CPU cores 128-Core
Higher than about 94% of the 386 comparable items (median 24).
Maximum turbo clock 4.1 GHz
Higher than about 70% of the 327 comparable items (median 3.9 GHz).

New to this? Buying a processor with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameAMD
Product lineAMD EPYC 9005
Model name100-000001443
Product nameEPYC 9755
Performance
Working frequency2.7 GHz
Processor
CPU cores128-Core
CPU socketSocket SP5
Maximum turbo clock4.1 GHz
TDP rating500 W
CPU threads256
Level 3 cache512 MB
64-bit capableYes
Maximum PCIe lanes128
Memory
Supported memory speedDDR5 6400
Channel configuration12 Channel
Ports & slots
PCIe generation5.0
Size & build
Shipping weight0.14 kg
Package size108 × 89 × 8 mm
In the box
Included coolerNot included - Processor Only

Other versions of this model

5 more in the same range

Questions about this item

Will the EPYC 9755 fit my existing SP5 motherboard and DDR5-6400 memory?

The processor uses Socket SP5 and an integrated DDR5-6400 controller across 12 channels, so it installs in any SP5 platform wired for 12-channel DDR5-6400 operation.

How can I confirm the 128 cores and 256 threads are active after installation?

Check the OS task manager or run lscpu — both will report 128 cores and 256 threads at the 2.7 GHz base clock with 4.1 GHz max turbo.

Does the box include a cooler or thermal paste for the 500 W TDP?

The package contains the processor only; a cooling solution rated for 500 W and compatible thermal interface material must be purchased separately.

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