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Four green DDR5 ECC RDIMM modules with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 128GB (4x32GB) DDR5 4800 CL40 ECC RDIMM for ASRock IMB-1900/1902 memory upgrade

SKU CH-V9KH-6P49W

DDR5 ECC registered server memory kit for ASRock Industrial IMB-1900 and IMB-1902 with four 32 GB modules at 4800 MT/s CL40

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB total capacity for demanding server workloads
  • DDR5 4800 speed with PC5-38400 bandwidth
  • ECC registered design protects data integrity
  • 1 V operation reduces power draw
  • Validated for ASRock IMB-1900 and IMB-1902 motherboards

Targeted server upgrade

This 128GB kit delivers four 32GB DDR5 4800 ECC RDIMM modules built for the ASRock Industrial IMB-1900 and IMB-1902 motherboards. Registered buffering and on-die ECC protect data integrity in always-on workloads. The kit suits administrators who need maximum supported capacity on these specific platforms.

Registered DDR5 form factor

Each module uses the standard 288-pin DDR5 RDIMM connector and operates at 1.1V without a heat spreader. The 1Rx4 organisation keeps the electrical load low on the memory controller. Builders must verify that the target chassis provides enough airflow over bare modules, as no thermal solution is included.

Baseline thermals and power

Running at the rated 4800 MT/s and CL40 latency, the modules draw 1.1V continuously under load. Registered operation adds minimal latency overhead while stabilising the signal for four populated slots. Expect typical server noise levels; the kit itself has no moving parts and relies on system airflow for cooling.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $3,283.99
Pricier than about 74% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $25.66 per GB
Pricier than about 70% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR38400-314K4
Total capacity128 GB (4 × 32 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank1Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASRock Industrial
In the box
Included items128 GB (4 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

What speed does the DDR5 4800 interface actually run at in this kit?

The kit is rated for DDR5 4800 (PC5-38400) with CL40 latency at 1.1 V.

Will these 288-pin RDIMMs fit the EATX IMB-1900 and IMB-1902 boards without clearance issues?

Yes, they are 288-pin DDR5 RDIMMs built for those ASRock Industrial motherboards.

How do I install the four 32 GB modules, and what step is often missed?

Populate all four slots in the order the manual specifies, then enable ECC in BIOS so the registered modules initialise correctly.

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