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Twelve green DDR5 RDIMM modules in anti-static packaging

NEMIX RAM

NEMIX RAM DDR5 6400 ECC Registered RDIMM 1.5TB 12x128GB 2Rx4 CL52 1.1V Supermicro H14DSH memory upgrade

SKU CH-HX5J-7QQH8

1.5 TB DDR5 6400 ECC registered RDIMM kit with twelve 128 GB 2Rx4 modules at CL52 and 1.1 V for Supermicro H14DSH

  • Total capacity1.5 TB (12 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 5 TB total capacity from twelve 128 GB modules for maximum server memory density
  • DDR5 6400 speed with CL52 latency delivers rated throughput for H14DSH workloads
  • Registered ECC architecture corrects single-bit errors and stabilises fully populated slots
  • 1 V operation matches the motherboard's memory-controller specification exactly
  • 288-pin RDIMM form factor fits the Supermicro H14DSH DIMM sockets without adapters

Capacity and form factor

This kit delivers 1.5TB of DDR5 memory across twelve 128GB Registered ECC RDIMMs. Each module uses a 2Rx4 organization at 1.10V with CL52 timings and fits the 288-pin slot required by the Supermicro H14DSH motherboard.

Who this suits and who it does not

It suits administrators expanding a Supermicro H14DSH server to its maximum supported capacity with matched, registered ECC modules. Builders using consumer boards, workstations needing unbuffered UDIMMs, or systems limited to lower densities should look elsewhere.

What the kit changes

The twelve-module kit removes the guesswork of mixing ranks or speeds, letting the memory controller initialize every slot at the rated DDR5-6400 speed. Registered buffering and on-die ECC keep all channels stable under full load, preventing silent data errors that unbuffered memory cannot correct.

How it compares

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

Price $53,038.99
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 $35.36 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 numberMR51200-724K12
Total capacity1.5 TB (12 × 128 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 rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items1.5 TB 12 × 128 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

My Supermicro H14DSH has 12 DDR5 slots — do I need to populate every slot for this 12-module kit to run at 6400 MT/s?

The kit is an exact-match 12×128 GB DDR5-6400 RDIMM set; the board must be filled according to its population rules so the memory controller sees the correct 2Rx4 rank layout at 1.1 V and CL52.

Will these 288-pin registered ECC RDIMMs work alongside any UDIMMs or SODIMMs I might already have in the server?

No — the H14DSH requires 288-pin DDR5 RDIMMs; UDIMMs and SODIMMs are physically and electrically incompatible and cannot be mixed in the same system.

After installing all twelve modules, how can I confirm the kit is running at its rated 6400 MT/s with ECC active?

Enter the BIOS or use a hardware-inventory tool and verify the memory speed shows DDR5-6400 (PC5-51200), CAS latency 52, voltage 1.1 V, and that ECC is reported as enabled for each DIMM.

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