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Twelve green DDR5 RDIMM modules with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM DDR5 4800 ECC RDIMM 1.5TB 12x128GB CL40 1.1V Supermicro H14DSG-O-CPU memory upgrade

SKU CH-7TD6-2ZJYT

1.5 TB DDR5 4800 ECC registered RDIMM kit with twelve 128 GB modules at CL40 and 1.1 V for Supermicro H14DSG-O-CPU

  • Total capacity1.5 TB (12 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 1.5TB 12X128GB

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  • 5 TB capacity from twelve 128 GB modules for large-scale server workloads
  • DDR5 4800 speed with CL40 latency matches the board's rated timing
  • Registered ECC design corrects single-bit errors and stabilises fully populated slots
  • 1 V operation meets the motherboard's voltage specification exactly
  • 288-pin RDIMM form factor fits the Supermicro H14DSG-O-CPU memory sockets

1.5TB DDR5 ECC RDIMM Kit

This 1.5TB NEMIX RAM kit contains twelve 128GB DDR5 4800 Registered ECC RDIMMs built for the Supermicro H14DSG-O-CPU motherboard. It delivers the exact rank, voltage and timing the board's memory controller expects. The modules are new and validated for full-capacity operation in every slot.

Servers needing maximum registered ECC capacity

This kit suits administrators populating all twelve DIMM slots on the H14DSG-O-CPU with registered ECC memory. It is not for systems that require unbuffered UDIMMs, SODIMM form factors, or non-ECC operation. Buyers needing a different capacity, speed or rank configuration should verify their motherboard manual first.

2Rx4 Registered ECC at 1.1V

The decisive specification is the 2Rx4 registered ECC organisation running at 1.1V with CL40 latency. This rank structure and voltage must match the H14DSG-O-CPU memory population rules for the system to recognise the full 1.5TB at DDR5 4800 speed.

How it compares

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

Price $49,365.99
Pricier than about 96% of the 21,161 comparable items (median $397.99).
Total capacity 1.5 TB (12 × 128 GB)
Higher than about 97% of the 20,941 comparable items (median 32 GB).
Price per GB $32.91 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 numberMR38400-724K12
Total capacity1.5 TB (12 × 128 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 rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items1.5 TB 12 × 128 GB DDR5 4800 MHz PC5-38400 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Will this 12-module kit fill every DIMM slot on my Supermicro H14DSG-O-CPU motherboard?

The kit provides 12 registered DDR5 RDIMMs, each 128 GB, for a total of 1.5 TB. The H14DSG-O-CPU uses 288-pin DDR5 slots and expects registered ECC modules; populate the slots in the order shown in the board manual to reach full capacity at DDR5-4800.

Can I keep my existing DDR5-4800 ECC RDIMMs and add this kit to the same server?

Mixing modules of different rank, capacity or timing can force the memory controller to downclock or disable ECC. For reliable operation, install all 12 modules from this kit as a matched set and remove any dissimilar DIMMs.

How do I confirm the server recognises the full 1.5 TB at the rated CL40 speed after installation?

Enter the BIOS or UEFI and check the memory information screen: it should show 1.5 TB total, DDR5-4800 (PC5-38400), 1.10 V, CL40 and ECC active. Save, boot the OS, and run a memory diagnostic to verify stability.

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