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Eight green DDR5 RDIMM modules in a row, black chips, no heat spreaders

NEMIX RAM

NEMIX RAM DDR5 ECC RDIMM 128GB 8x16GB 4800MHz CL40 1.1V 1Rx8 Registered Server Memory Upgrade

SKU CH-NMY8-CDHS0

128 GB DDR5 ECC registered RDIMM kit in eight 16 GB modules at 4800 MHz CL40 1.1 V for Supermicro H13DSG-O-CPU-D

  • Total capacity128 GB (8 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 128GB 8X16GB

Show 30 more
  • 128 GB total capacity from eight 16 GB modules
  • DDR5 4800 MT/s speed with CL40 latency
  • Registered ECC design for error correction and stability
  • 1 V operating voltage for efficient power use
  • Validated for Supermicro H13DSG-O-CPU-D motherboard

Exact-fit server upgrade

This 128GB kit delivers eight 16GB DDR5 RDIMMs built to the precise 1Rx8 rank, 1.1V voltage and CL40 timing the Supermicro H13DSG-O-CPU-D memory controller expects. Registered ECC architecture offloads the controller and corrects single-bit errors on the fly so every slot runs fully populated at rated speed without silent data corruption.

Sustained-load stability

Registered buffering keeps signal integrity intact across all eight slots during continuous multi-threaded workloads while ECC corrects single-bit errors in real time preventing silent data corruption and unplanned reboots. The modules operate at the standard 1.1V DDR5 voltage maintaining thermal headroom inside dense server chassis.

288-pin DDR5 RDIMM form factor

The kit only fits motherboards that accept 288-pin registered DDR5 DIMMs and cannot be used in boards requiring UDIMM, SODIMM or any earlier DDR generation. Verify your platform manual for supported capacities and population order before purchase.

How it compares

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

Price $3,808.99
Pricier than about 76% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (8 × 16 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $29.76 per GB
Pricier than about 85% 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 numberMR38400-618K8
Total capacity128 GB (8 × 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 items128 GB 8 × 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

How much power does the 1.1V DDR5 kit draw when the server runs all day?

Each module operates at 1.10V; total system draw depends on CPU load and motherboard regulation.

What motherboard slot and population rules must my Supermicro H13DSG-O-CPU-D already have for this 8×16GB kit to work?

The board needs eight 288-pin RDIMM slots and must support 1Rx8 registered ECC population per the manual.

Can I mix these 1Rx8 CL40 RDIMMs with older DDR5 modules of different rank or latency in the same server?

Mixing ranks or timings is not recommended; the memory controller expects identical 1Rx8 CL40 modules for stable operation.

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