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Eight green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 128GB (8 x 16GB) DDR5 6400 CL52 1.1V ECC RDIMM Supermicro H14DSG-O-CPU memory upgrade

SKU CH-680K-665JA

Eight-module DDR5 kit delivers 128 GB of registered ECC server memory at 6400 MT/s, CL52, 1.1 V for the Supermicro H14DSG-O-CPU motherboard

  • Total capacity128 GB (8 × 16 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 128 GB capacity from eight 16 GB modules for full server density
  • DDR5 6400 speed with CL52 latency at rated 1.1 V for stable throughput
  • Registered ECC RDIMM design offloads the controller and corrects single-bit errors on the fly
  • 288-pin form factor matches the Supermicro H14DSG-O-CPU motherboard slot requirements exactly
  • Built with major OEM Samsung Micron Hynix chips for enterprise-grade reliability

Exact-match upgrade for Supermicro H14DSG-O-CPU

This 128GB kit delivers eight 16GB DDR5 RDIMMs rated at 6400 MT/s with CL52 latency and 1.1V operation. Registered ECC architecture ensures the memory controller recognises every module at full capacity without down-clocking.

Fits the board's 288-pin RDIMM slots

Registered buffering offloads the CPU memory controller so all slots can be populated simultaneously. ECC corrects single-bit errors on the fly, preventing silent data corruption in production workloads.

Sustained enterprise stability under full population

Registered design maintains signal integrity across all channels during continuous operation. ECC protection operates continuously, correcting errors before they affect applications or trigger unplanned reboots.

How it compares

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

Price $4,102.99
Pricier than about 77% 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 $32.05 per GB
Pricier than about 90% 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 numberMR51200-618K8
Total capacity128 GB (8 × 16 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
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 6400 MHz PC5-51200 1Rx8 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

What is the CAS latency of this DDR5 ECC RDIMM kit?

The kit runs at CL52 latency, matching the timing your Supermicro H14DSG-O-CPU memory controller expects for stable operation.

Does this registered memory generate extra heat when all eight slots are populated?

Registered architecture offloads the memory controller so every slot runs fully populated at rated speed without added thermal load.

Which motherboard is this 128GB kit validated for?

It is verified compatible with the Supermicro H14DSG-O-CPU motherboard and its 288-pin RDIMM population rules.

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