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Eight green DDR5 RDIMM modules in a row, gold contacts visible, no heat spreaders

NEMIX RAM

NEMIX RAM DDR5 256GB (8×32GB) 4800MHz CL40 1.1V 2Rx8 ECC RDIMM Supermicro H13DSG-OM memory upgrade

SKU CH-5HNQ-HA1Z6

Eight-module kit provides 256 GB of DDR5 registered ECC memory at 4800 MHz with CL40 latency and 1.1 V operation

  • Total capacity256 GB (8 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 256GB 8X32GB

Show 30 more
  • 256 GB total capacity from eight 32 GB modules for dense server workloads
  • DDR5 4800 MT/s speed delivers high bandwidth for memory-intensive applications
  • CL40 latency at 1.1 V balances responsiveness with power efficiency
  • Registered ECC RDIMM design enables full-slot population and single-bit error correction
  • Verified compatibility with Supermicro H13DSG-OM motherboard ensures correct fit and operation

System-specific DDR5 upgrade kit

This 256 GB kit contains eight 32 GB DDR5 RDIMMs built to the exact rank, voltage and timing the Supermicro H13DSG-OM memory controller expects. Each module is a 288-pin registered ECC DIMM running at 1.1 V with a CL40 latency. The registered architecture offloads the controller so every slot stays fully populated at rated speed.

Registered ECC with 2Rx8 organisation

The single specification that decides fitment is the 2Rx8 registered ECC layout combined with DDR5-4800 (PC5-38400) timing at 1.1 V. Only modules matching this exact rank, buffering type and voltage will be recognised at full capacity and run without down-clocking on the target board.

Thermals and power in normal use

Bare modules without heat spreaders rely on chassis airflow, so server-grade cooling is required to keep temperatures in check. At the standard 1.1 V the kit draws minimal power per DIMM and produces no audible noise of its own, leaving thermal performance entirely dependent on the host system's fan profile.

How it compares

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

Price $7,091.99
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 $27.70 per GB
Pricier than about 77% 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 numberMR38400-328K8
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
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items256 GB 8 × 32 GB DDR5 4800 MHz PC5-38400 2Rx8 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

What does the CL40 latency mean for real-world server performance?

CL40 is the CAS latency at DDR5-4800; the registered buffer lets all eight slots run fully populated at rated speed while ECC corrects single-bit errors on the fly.

How does the PC5-38400 rating limit throughput on the H13DSG-OM?

PC5-38400 caps the kit at 4800 MT/s; the motherboard will not run these modules faster than that specification.

Will the 288-pin RDIMM modules clear the CPU coolers on a Supermicro H13DSG-OM?

The modules are standard-height 288-pin RDIMMs with no heat spreader, matching the form factor the H13DSG-OM memory slots require.

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