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Four green DDR5 RDIMM sticks, no heat spreaders, 288 pins each

NEMIX RAM

NEMIX RAM 256GB (4x64GB) DDR5 4800 CL40 2Rx4 ECC RDIMM for ASRock IMB-1900 IMB-1902 memory upgrade

SKU CH-9YSD-6X4KJ

256 GB DDR5 ECC registered server memory kit, four 64 GB modules at 4800 MHz CL40 for ASRock IMB-1900 and IMB-1902 motherboards

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256 GB total capacity from four 64 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered RDIMM design for server reliability
  • CL40 latency at 1.1 V operating voltage
  • Validated for ASRock IMB-1900 and IMB-1902 motherboards

ASRock IMB-1900 and IMB-1902 DDR5 Kit

This 256 GB registered DDR5 kit targets the ASRock Industrial IMB-1900 and IMB-1902 motherboards. It contains four 64 GB ECC RDIMM modules rated at 4800 MT/s. The kit is built for servers and workstations that require registered memory with error correction.

Registered ECC DDR5 at 4800 MT/s

The modules operate at 1.1 V with a CAS latency of 40 and a 2Rx4 organisation. As registered DIMMs they present a controlled electrical load to the memory controller. The DDR5 interface limits this kit to the 4800 MT/s data rate and the 288-pin form factor defined for that generation.

256 GB for multi-socket capacity needs

Four 64 GB ranks deliver 256 GB total, suitable for virtualisation hosts or large in-memory databases. The registered design supports higher per-slot densities than unbuffered alternatives. Systems needing more than 256 GB or faster memory speeds must use a different platform or memory specification.

How it compares

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

Price $6,793.99
Pricier than about 83% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $26.54 per GB
Pricier than about 73% 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 numberMR38400-924K4
Total capacity256 GB (4 × 64 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 rank2Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASRock Industrial
In the box
Included items256 GB (4 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Should I choose the 256GB kit with four 64GB modules or a smaller capacity for the ASRock IMB-1900?

The 256GB kit fills four slots with 64GB DDR5 4800 CL40 ECC RDIMMs at 1.1V, giving maximum registered capacity for the IMB-1900 and IMB-1902.

What does the DDR5 4800 speed deliver once installed in the IMB-1902?

The modules run at 4800 MT/s (PC5-38400) with CL40 latency, providing registered ECC bandwidth for server workloads on the industrial motherboard.

How does the 288-pin DDR5 RDIMM interface limit performance on these boards?

The 288-pin registered DDR5 interface caps the kit at 4800 MT/s and CL40, matching the IMB-1900 and IMB-1902 memory controller specification.

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