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

NEMIX RAM

NEMIX RAM 256GB (8x32GB) DDR5 4800MHz ECC RDIMM for ASRock IMB-1900/1902

SKU CH-27N9-73S8J

Eight-module 256 GB DDR5 4800 MHz ECC RDIMM kit built for ASRock IMB-1900 and IMB-1902 server boards

  • Total capacity256 GB (8 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256GB total capacity scales server workloads with eight 32GB modules
  • DDR5 4800MHz speed delivers high bandwidth for data-intensive applications
  • ECC registered design detects and corrects memory errors automatically
  • 1V operating voltage reduces power draw in dense configurations
  • Validated for ASRock IMB-1900 and IMB-1902 industrial motherboards

ASRock IMB-1900/1902 DDR5 ECC Kit

This 256GB kit delivers eight 32GB DDR5 4800MHz registered DIMMs built for ASRock Industrial EATX motherboards IMB-1900 and IMB-1902. Each module runs at 1.1V with CL40 latency and 1Rx4 organisation. ECC and registered signalling protect data integrity in server and workstation workloads.

Thermals and power at 1.1V

Operating at 1.1V keeps power draw low for high-density 256GB configurations. The modules ship without heat spreaders, relying on chassis airflow for cooling. Registered buffering reduces electrical load on the memory controller during sustained operation.

Kit contents and compatibility

The package contains eight 288-pin DDR5 RDIMMs totalling 256GB, pre-validated for IMB-1900 and IMB-1902 platforms. No additional software or accessories are included. Builders needing non-ECC memory, different capacities, or support for other motherboards should select an alternative kit.

How it compares

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

Price $6,779.99
Pricier than about 83% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (8 × 32 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $26.48 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 numberMR38400-314K8
Total capacity256 GB (8 × 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 items256 GB (8 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

How do I install the 8x32GB DDR5 4800MHz ECC RDIMM kit into the ASRock IMB-1900 or IMB-1902, and which step is often missed?

Power off the server, open the chassis, align each 288-pin module with the DDR5 RDIMM slots, press firmly until the retention clips click, then verify in BIOS that all 256GB are detected at 4800MHz with ECC active; the step often missed is seating every module fully so the clips engage on both sides.

What maintenance or replacement will the 1Rx4 registered DDR5 modules need over time?

The modules have no heat spreader and no moving parts, so no routine maintenance is required; if a module fails, replace the faulty 32GB stick with an identical DDR5 4800MHz CL40 1.10V 1Rx4 ECC RDIMM to keep the 256GB kit matched.

What limit appears first when the 256GB DDR5 4800MHz kit runs sustained workloads on the IMB-1900 or IMB-1902?

The registered DDR5 modules operate at a fixed 1.10V and CL40 latency, so the first limit under sustained use is the 4800MHz data rate and CAS 40 timing ceiling; thermal throttling is unlikely without a spreader, but the speed and latency bounds are hard limits.

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