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Green rectangular DDR4 server memory module with gold contacts and black chips on both sides

A-Tech

A-Tech 128GB DDR4 2400MHz ECC LRDIMM Server Memory

SKU CH-DWZN-W1JDV

128GB DDR4 2400MHz ECC LRDIMM module with CL17 latency and 1.2V operation for server upgrades

  • Capacity128GB
  • SpeedDDR4 2400 (PC4 19200)
  • CAS LatencyCL17
  • Voltage1.20V
  • ECCYes
  • Buffered/RegisteredLoad Reduced
  • 128 GB capacity lets servers handle heavy workloads
  • DDR4 2400 MHz speed with CL17 latency supports fast data access
  • ECC LRDIMM design with 2S4Rx4 rank improves signal integrity at scale
  • 2 V standard voltage reduces power draw per module
  • Tested replacement for Samsung M386AAK40B40-CTC and M386AAK40B40-CUC modules

128GB DDR4 2400 ECC LRDIMM

This single 128GB module uses DDR4 2400 (PC4-19200) technology with CL17 latency and 1.20V operation. It is built as a Load Reduced DIMM with 2S4Rx4 (8Rx4) 3DS/TSV organisation for server and workstation platforms that require registered ECC memory. Buyers whose systems only accept unbuffered UDIMMs or lower-density RDIMMs cannot use this module.

Thermals noise and power draw

Operating at the standard DDR4 voltage of 1.20V keeps power draw modest for a 128GB LRDIMM in typical server workloads. The load-reduced buffer reduces electrical loading on the memory bus, which helps the platform's cooling solution maintain stable temperatures without excessive fan speed. No active cooling is present on the module itself, so airflow across the DIMM slots remains the only thermal path.

Sustained load behaviour

Under continuous heavy utilisation the 2S4Rx4 3DS/TSV layout distributes access across eight logical ranks, allowing the memory controller to keep all banks busy without excessive row conflicts. ECC correction handles single-bit errors transparently, preventing data corruption during long-running compute or virtualisation tasks. Systems that cannot address 8Rx4 ranks or lack LRDIMM support in BIOS will not post with this module installed.

Punti di forza

  • 128 GB capacity lets servers handle heavy workloads
  • DDR4 2400 MHz speed with CL17 latency supports fast data access
  • ECC LRDIMM design with 2S4Rx4 rank improves signal integrity at scale
  • 2 V standard voltage reduces power draw per module
  • Tested replacement for Samsung M386AAK40B40-CTC and M386AAK40B40-CUC modules

Caratteristiche tecniche

BrandA-Tech
SeriesCompatible Replacement for Samsung
ModelM386AAK40B40-CTC, M386AAK40B40-CUC
Capacity128GB
SpeedDDR4 2400 (PC4 19200)
CAS LatencyCL17
Voltage1.20V
ECCYes
Buffered/RegisteredLoad Reduced
Rank2S4Rx4 (8Rx4)
ChipsetSamsung Chipset
FeaturesM386AAK40B40-CTC, M386AAK40B40-CUC

Domande su questo articolo

How do I install this 288-pin DDR4 LRDIMM and what step is often missed?

Align the notch on the module with the slot key, press firmly until both side clips lock, and verify the system detects all 128GB at 2400MHz in BIOS; the step often missed is confirming the motherboard supports 8Rx4 3DS/TSV load-reduced modules before purchase.

What maintenance or replacement will this ECC LRDIMM need over time?

No routine maintenance is required; if a correctable error count rises or the module fails, replace the single 128GB stick — ECC handles single-bit errors transparently, but uncorrectable faults mean the module itself must be swapped.

What limit appears first when this 1.20V 2400MHz CL17 module runs sustained workloads?

The memory controller's maximum supported rank density and thermal envelope; 8Rx4 3DS stacking increases electrical load, so sustained throughput is capped by the platform's ability to cool and signal to all ranks at 2400MHz.

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