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Sixteen green DDR5 RDIMM modules in a row, bare chips, 288-pin gold contacts, no heat spreader

NEMIX RAM

NEMIX RAM DDR5 4800 ECC RDIMM 256GB 16x16GB CL40 1.1V H13SSF

SKU CH-XY2Z-5DHZD

256 GB DDR5 4800 ECC registered RDIMM kit in 16 modules, validated for Supermicro H13SSF motherboards

  • Total capacity256 GB (16 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 256GB 16X16GB

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  • 256 GB total capacity lets you run memory-heavy workloads without swapping
  • Registered ECC design corrects single-bit errors on the fly to prevent silent data corruption
  • DDR5 4800 speed with CL40 timing delivers rated throughput for the Supermicro H13SSF
  • 1 V operation keeps power draw low while maintaining stability across all 16 modules
  • 288-pin RDIMM form factor matches the board's required slot type for full 16-slot population

Exact-match kit for Supermicro H13SSF

This 256GB kit contains sixteen 16GB DDR5 RDIMMs built to the precise rank, voltage and timing the H13SSF memory controller expects. Registered ECC architecture offloads the controller so every slot runs fully populated at the rated 4800 speed. The modules are new and validated for this specific motherboard.

Capacity and headroom

Sixteen 1Rx8 modules deliver 256GB total, letting memory-intensive workloads such as virtualisation hosts or in-memory databases keep large datasets in RAM. Each stick operates at 1.10V with CL40 latency, so the kit runs at its rated PC5-38400 throughput without overclocking. Population rules in the board manual still dictate maximum supported capacity per channel.

Thermals noise and power

Bare modules without heat spreaders rely on server chassis airflow for cooling; power draw stays at the standard 1.1V DDR5 level. Registered buffering reduces electrical load on the memory controller, helping stability when all sixteen slots are filled. Acoustic profile is dictated by the system fans, not the memory itself.

How it compares

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

Price $6,423.99
Pricier than about 82% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (16 × 16 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $25.09 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 numberMR38400-618K16
Total capacity256 GB (16 × 16 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
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items256 GB 16 × 16 GB DDR5 4800 MHz PC5-38400 1Rx8 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Will this 256GB DDR5 4800 CL40 1Rx8 ECC RDIMM kit run at full speed alongside older DDR5 modules I already have?

Mixing modules with different speeds, latencies or ranks can force the motherboard to run all slots at the lowest common settings; for guaranteed 4800 MHz CL40 operation across all 16 slots, populate the board with identical 1Rx8 1.10V RDIMMs.

How can I confirm the 16x16GB DDR5 4800 ECC RDIMM kit is operating correctly after installation?

Enter the system BIOS or UEFI and verify that all 256GB are detected at DDR5-4800 with CL40 timings and ECC reported as active.

What is included in the 256GB 16x16GB DDR5 4800 ECC RDIMM kit and what must be purchased separately?

The package contains sixteen 16GB 288-pin DDR5 4800 CL40 1Rx8 1.10V ECC Registered RDIMM modules; no additional cables, brackets or software are supplied.

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