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 DDR5 RDIMM module with black chips, no heat spreader, 288-pin edge connector

NEMIX RAM

NEMIX RAM CSE-735D4-1K26B 128GB DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-S8AZ-VYS8V MPN CSE-735D4-1K26B

128 GB DDR5 4800 ECC registered RDIMM for Supermicro SuperWorkstation SYS-531A-I

  • Capacity128GB
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 128 GB capacity handles large server workloads
  • DDR5 4800 speed delivers high data throughput
  • CL40 latency supports responsive memory access
  • ECC registered design protects data integrity
  • 1 V operation reduces power consumption

128 GB DDR5 4800 ECC RDIMM

This 128 GB DDR5 4800 module provides registered ECC memory for Supermicro servers and workstations. It targets administrators expanding capacity in the SYS-531A-I or X13SRA-TF platforms where data integrity is mandatory. The single-stick design fills one 288-pin slot and runs at 1.10 V.

Registered 4Rx4 build with major OEM chips

The module uses a 4Rx4 organisation built from Samsung, Micron or Hynix components without a heat spreader. Registered buffering reduces electrical load on the memory controller, allowing dense population in multi-socket boards. Standard 288-pin DDR5 keying ensures correct orientation during installation.

Upgrade path for compatible Supermicro systems

This part replaces lower-capacity DDR5 RDIMMs or adds new capacity to empty slots in qualified Supermicro SuperWorkstation models. The jump is worthwhile when workloads demand 128 GB per DIMM and the platform memory controller supports 4Rx4 registered modules at 4800 MT/s.

Highlights

  • 128 GB capacity handles large server workloads
  • DDR5 4800 speed delivers high data throughput
  • CL40 latency supports responsive memory access
  • ECC registered design protects data integrity
  • 1 V operation reduces power consumption

Specifications

BrandNEMIX RAM
SeriesSuperMicro Server/Workstation Compatible Series Memory
ModelSuperMicro 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 SystemSupermicro
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 speed and data-rate does this 128GB RDIMM run at?

It operates at DDR5 4800 MT/s, labelled PC5-38400, with CAS latency CL40 at 1.1 V.

Which motherboard slot and form-factor must the system provide for this module?

A 288-pin DDR5 RDIMM socket; the stick is a single 128 GB 4Rx4 registered DIMM with no heat spreader.

How is the module seated, and what step do builders often miss?

Align the key notch with the slot, press firmly until both retention clips click, then verify in BIOS that the channel shows 4800 MT/s and ECC active.

Also in this aisle

People compared these

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