We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Single green 288-pin DDR5 RDIMM module with black chips, no heat spreader

NEMIX RAM

NEMIX RAM 128GB DDR5 4800 ECC RDIMM 4Rx4 CL40 HPE P43334-B21 memory upgrade

SKU CH-DN1J-4ZCB9

A 128 GB DDR5 4800 ECC registered DIMM with CL40 latency, 1.1 V operation and 4Rx4 organisation for HPE servers

  • Capacity128GB
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 128GB capacity scales memory-intensive server workloads
  • DDR5 4800MHz speed delivers high data throughput
  • ECC registered design protects critical data integrity
  • 4Rx4 rank configuration maximises module density
  • 1V operation reduces power draw per module

Targeted Server Upgrade

This NEMIX RAM module delivers 128GB of DDR5 ECC registered memory for HPE server and workstation platforms. The single DIMM format suits administrators who need to expand capacity in dense configurations without occupying additional slots. IT teams handling virtualisation, databases or large-scale compute workloads gain the density required for memory-intensive applications.

Registered Design and Pin Layout

The 288-pin RDIMM form factor uses a registered buffer to reduce electrical load on the memory controller, supporting stable operation in multi-DIMM populations. Operating at 1.10V, the module aligns with DDR5 power expectations for enterprise platforms. Absence of a heat spreader keeps the profile low for restricted airflow paths, while the 4Rx4 organisation maximises rank density per channel.

Decisive Specification

DDR5 4800 speed with CL40 latency and PC5-38400 bandwidth defines the throughput ceiling for this part. The 4Rx4 rank structure and ECC registration determine whether the motherboard memory controller can address the full 128GB capacity at rated frequency. Buyers who need higher frequencies or lower latencies must verify platform support before selecting this module.

Highlights

  • 128GB capacity scales memory-intensive server workloads
  • DDR5 4800MHz speed delivers high data throughput
  • ECC registered design protects critical data integrity
  • 4Rx4 rank configuration maximises module density
  • 1V operation reduces power draw per module

Specifications

BrandNEMIX RAM
SeriesHPE Server/Workstation Compatible Series Memory
ModelHPE DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-744K1
Capacity128GB
SpeedDDR5 4800 (PC5 38400)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemHPE
CAS LatencyCL40
Heat SpreaderNo
Type288-Pin DDR5 RDIMM
Rank4Rx4
FeaturesDDR5 ECC Registered RDIMM Server Motherboard Compatible
Package Content128GB (1X128GB) DDR5 4800MHZ PC5-38400 4Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

What DDR5 standard and speed does this 128GB module run at?

This module operates at DDR5 4800 (PC5-38400) with a CAS latency of CL40 and 1.10V voltage.

What physical slot and form factor does this 288-pin RDIMM require?

It fits a standard 288-pin DDR5 RDIMM slot on compatible HPE server or workstation motherboards.

How is this registered ECC module installed, and what common step is missed?

Align the notch with the slot key, press firmly until the retention clips click; the step often missed is verifying the server BIOS recognises the full 128GB capacity and ECC function after boot.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.