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Square green server processor on a large LGA 5964 substrate with gold contacts and silver heat spreader

Ampere

Ampere AMPEREONEA128-34X server processor 128-core 3.4 GHz

SKU CH-FZAX-KJ0Y6 MPN AMPEREONEA128-34X

128-core server processor running at 3.4 GHz with DDR5-5200 memory support and 280 W TDP

  • NameAmpereOne A128-34X 3.4GHz 128-Core 280W 5 nm Server CPU
  • CPU Socket TypeLGA 5964
  • # of Cores128-Core
  • Operating Frequency3.4 GHz
  • Manufacturing TechTSMC 5 nm
  • Integrated Memory Controller SpeedDDR5 5200
  • 128 cores deliver massive parallel throughput for dense workloads
  • 4 GHz clock speed provides high single-thread performance
  • TSMC 5 nm process enables efficiency at 280 W TDP
  • DDR5 5200 memory controller supports high bandwidth
  • Advanced security mitigations protect against side-channel and buffer-overflow attacks

128-core AmpereOne server processor

The AmpereOne A128-34X is a 128-core server processor running at 3.4 GHz on TSMC 5 nm technology. It uses the LGA 5964 socket and has a thermal design power of 280W. The integrated memory controller supports DDR5 5200.

Suited for high-density compute.

This processor suits deployments that need maximum core count in a single socket. Buyers who need a lower thermal envelope or fewer cores should look at other parts. A separate cooling solution is required because none is included.

LGA 5964 socket defines platform compatibility

The CPU fits only motherboards with the LGA 5964 socket. Memory must be DDR5 5200 modules to match the integrated controller speed. Verify board and chassis support for 280W cooling before purchase.

Points forts

  • 128 cores deliver massive parallel throughput for dense workloads
  • 4 GHz clock speed provides high single-thread performance
  • TSMC 5 nm process enables efficiency at 280 W TDP
  • DDR5 5200 memory controller supports high bandwidth
  • Advanced security mitigations protect against side-channel and buffer-overflow attacks

Caractéristiques

BrandAmpere
SeriesAmpereOne
NameAmpereOne A128-34X 3.4GHz 128-Core 280W 5 nm Server CPU
ModelA144-24X
CPU Socket TypeLGA 5964
# of Cores128-Core
Operating Frequency3.4 GHz
Manufacturing TechTSMC 5 nm
Integrated Memory Controller SpeedDDR5 5200
Thermal Design Power280W
Cooling DeviceCooling device not included - Processor Only
Poids d’expédition0.91 kg
Dimensions du colis152 × 102 × 5 mm

Questions sur cet article

How do I install the AmpereOne A128-34X into the LGA 5964 socket, and which step is most often done wrong?

Align the processor triangle with the socket corner marker, lower it straight down without force, then close the retention lever fully. The step most often done wrong is applying uneven pressure or forcing the chip before the lever is latched, which can bend the 5964 contact pads.

What maintenance or replacement will the AmpereOne A128-34X need later, given that no cooling device is included?

You must supply a compatible 280W TDP cooler and replace its thermal paste every two to three years. The processor itself has no user-serviceable parts, but fan bearings on your chosen cooler will wear out and need replacement to maintain the 3.4 GHz operating frequency.

What limit appears first on the AmpereOne A128-34X under sustained all-core workloads?

The 280W thermal design power is the first limit reached. When all 128 cores run at 3.4 GHz the package hits its power ceiling, so the firmware caps frequency to stay within the 280W envelope unless your cooling solution can dissipate more heat than the rated TDP.

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