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
Sixteen green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM DDR5 4800 ECC Registered RDIMM 256GB (16 x 16GB) CL40 1.1V 288-Pin Supermicro H14DSH memory upgrade

SKU CH-M4XR-0AJHR

A 256GB kit of sixteen 16GB DDR5 4800 registered ECC RDIMMs at 1.1V CL40, validated for the Supermicro H14DSH

  • Capacity256GB (16 x 16GB)
  • Type288-Pin DDR5 RDIMM
  • SpeedDDR5 4800 (PC5 38400)
  • CAS LatencyCL40
  • Voltage1.10V
  • ECCYes

Size 256GB 16X16GB

Show 30 more configurations
  • 256 GB total capacity from sixteen matched 16 GB modules
  • DDR5 4800 MT/s speed with CL40 latency runs at rated frequency
  • Registered ECC architecture corrects single-bit errors and stabilises fully populated slots
  • 1 V operating voltage matches the motherboard memory controller specification
  • Verified compatible with Supermicro H14DSH 288-pin RDIMM slots

Exact-match server kit

This 256GB kit provides sixteen 16GB DDR5 4800 RDIMMs built to the precise specifications of the Supermicro H14DSH motherboard. Each module operates at 1.1V with CL40 latency and 1Rx8 registered ECC organisation. The memory controller recognises the full capacity at rated speed without manual tuning.

Registered ECC headroom

Registered architecture offloads the memory controller so all sixteen slots can be populated at full capacity while ECC corrects single-bit errors on the fly. The kit delivers 256GB of protected memory for virtualisation, databases and large datasets. Workloads that exceed this capacity or require faster than DDR5 4800 speeds will need a different platform.

288-pin RDIMM form factor

The modules use the 288-pin RDIMM form factor required by the H14DSH and omit heat spreaders for dense server chassis airflow. Installation must follow the motherboard manual population order for full recognition. Builders using consumer UDIMMs, SODIMMs or non-ECC memory cannot use this kit.

Highlights

  • 256 GB total capacity from sixteen matched 16 GB modules
  • DDR5 4800 MT/s speed with CL40 latency runs at rated frequency
  • Registered ECC architecture corrects single-bit errors and stabilises fully populated slots
  • 1 V operating voltage matches the motherboard memory controller specification
  • Verified compatible with Supermicro H14DSH 288-pin RDIMM slots

Specifications

BrandNEMIX RAM
SeriesNEMIX RAM Original Series Server Memory
ModelDDR5 ECC RDIMM Registered Server Memory
Part NumberMR38400-618K16
Capacity256GB (16 x 16GB)
Type288-Pin DDR5 RDIMM
SpeedDDR5 4800 (PC5 38400)
CAS LatencyCL40
Voltage1.10V
ECCYes
Buffered/RegisteredRegistered
Rank1Rx8
ChipsetMajor OEM Samsung, Micron, Hynix
Heat SpreaderNo
Compatible SystemSupermicro
FeaturesDDR5 ECC RDIMM Motherboard Compatible
Package Content256GB 16X16GB DDR5 4800MHz PC5-38400 1Rx8 1.1V 288-PIN ECC RDIMM KIT

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Will the 16 288-pin DDR5 4800 RDIMMs run alongside any existing DDR5 RDIMMs already installed in my Supermicro H14DSH?

Mixing kits is not recommended. The server's memory controller expects identical rank, voltage and timing across every populated slot; this kit uses 1Rx8 modules at 1.1 V CL40, so adding modules with different specifications can prevent full-speed operation or cause boot failures.

How can I verify the kit is running at DDR5 4800 CL40 1.1 V after installation?

Enter the BIOS or use a hardware-information tool such as CPU-Z or dmidecode; each module should report 4800 MT/s, CAS latency 40, 1.1 V and Registered ECC 1Rx8. The Supermicro H14DSH will also display the total 256 GB capacity during POST when all 16 slots are filled.

Does the package contain only the 16 RDIMMs or are any cables, brackets or tools included?

The box contains only the 16 x 16 GB DDR5 4800 ECC Registered RDIMMs. No cables, brackets, heat spreaders or installation tools are supplied; the modules install directly into the 288-pin DIMM sockets on the motherboard.

Also in this aisle

People compared these

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