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Green rectangular DDR4 DIMM with black chips and gold contacts

A-Tech

A-Tech 128GB DDR4 2933 ECC RDIMM 4Rx4 Server Memory

SKU CH-Z3JJ-X30KD

High-capacity 128 GB DDR4 2933 MHz ECC registered DIMM for server workloads

  • Capacity128GB
  • SpeedDDR4 2933 (PC4 23400)
  • CAS LatencyCL21
  • Voltage1.20V
  • ECCYes
  • Buffered/RegisteredRegistered
  • 128GB capacity supports heavy server workloads
  • DDR4 2933 speed enables fast data throughput
  • ECC registered design protects data integrity
  • 2V operation reduces power consumption
  • Samsung chipset ensures reliable compatibility

128GB DDR4 2933 ECC RDIMM Module

This A-Tech module is a 128GB DDR4 2933MHz PC4-23400 ECC Registered DIMM built with Samsung chipset. It operates at 1.20V with CL21 latency and a 4Rx4 rank configuration. The 288-pin DIMM is designed as a compatible replacement for the Samsung M393AAG40M3B-CYF part number. It targets server and workstation systems requiring high-capacity registered memory with error correction.

Suited for high-density server upgrades.

This memory suits administrators upgrading compatible servers or workstations that support DDR4 2933MHz ECC RDIMM modules in a 4Rx4 organisation. It is not for desktop PCs or laptops that accept only unbuffered non-ECC UDIMMs. It is also not for systems limited to lower ranks or speeds below PC4-23400. Buyers must verify their platform's qualified vendor list before purchase.

Deciding spec: 4Rx4 registered ECC at DDR4 2933

The single specification that determines fit is the 4Rx4 registered ECC organisation running at DDR4 2933MHz (PC4-23400). Many server chipsets restrict the number of load-reduced or quad-rank modules per channel, so this rank structure dictates whether the motherboard can address the full 128GB capacity. If the system requires 1Rx4, 2Rx4 or 2Rx8 ranks instead, this module will not function correctly.

Puntos fuertes

  • 128GB capacity supports heavy server workloads
  • DDR4 2933 speed enables fast data throughput
  • ECC registered design protects data integrity
  • 2V operation reduces power consumption
  • Samsung chipset ensures reliable compatibility

Especificaciones

BrandA-Tech
SeriesCompatible Replacement for Samsung
ModelM393AAG40M3B-CYF
Capacity128GB
SpeedDDR4 2933 (PC4 23400)
CAS LatencyCL21
Voltage1.20V
ECCYes
Buffered/RegisteredRegistered
Rank2S2Rx4 (4Rx4)
ChipsetSamsung Chipset
FeaturesM393AAG40M3B-CYF

Preguntas sobre este artículo

Will this 288-pin DDR4 RDIMM fit my server's DIMM slots?

The module uses the standard 288-pin DDR4 DIMM form factor and 1.20 V operating voltage, matching the physical and electrical specification of DDR4 RDIMM slots in compatible servers.

What is the correct way to seat this 4Rx4 registered module, and what step is often missed?

Align the notch with the slot key, press firmly until both side latches click shut, then verify in BIOS that the 128 GB capacity and 2933 MT/s speed are recognised; skipping the latch check is the common mistake.

When should this ECC RDIMM be replaced?

Replace the module if the system logs uncorrectable ECC errors, fails to POST with the module installed, or the firmware shows a reduced memory capacity.

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