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Four green DDR5 RDIMM modules without heat spreaders, 288-pin, 128GB each

NEMIX RAM

NEMIX RAM 512GB 4x128GB DDR5 6400 CL52 1.1V 2Rx4 ECC RDIMM Supermicro H14DSH

SKU CH-MFGS-G47DT

512 GB DDR5 server kit of four 128 GB registered ECC RDIMMs at 6400 MT/s, CL52, 1.1 V, 2Rx4, validated for Supermicro H14DSH

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Exact DDR5-6400 CL52 1.1V timing recognised at full speed
  • 4×128 GB 2Rx4 registered ECC kit delivers 512 GB capacity
  • Verified fit for Supermicro H14DSH 288-pin RDIMM slots
  • Registered architecture offloads controller for full-slot stability
  • ECC corrects single-bit errors preventing silent data corruption

Exact-Match DDR5 Server Kit

This 512GB kit delivers four 128GB DDR5-6400 Registered ECC RDIMMs built to the Supermicro H14DSH memory controller's exact rank, voltage and timing requirements. It targets administrators who need the full 512GB capacity recognised at rated speed without manual tuning.

Registered Architecture For Full Population

The 2Rx4 Registered design offloads the memory controller so every slot runs fully populated at the rated 6400 MT/s and 1.1V. Builders must follow the motherboard manual for approved DIMM population order and maximum supported capacity per channel before installation.

Lifetime Support And Verified Fitment

The bundle includes only the four matched modules; no heat spreaders, cables or software are supplied. Free US-based technical support and a lifetime replacement warranty cover the kit, but buyers must confirm their specific H14DSH revision supports this density and population rule.

How it compares

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

Price $19,253.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $37.61 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 numberMR51200-724K4
Total capacity512 GB (4 × 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 items512 GB 4 × 128 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Will the 1.1 V operating voltage keep power draw in check when all four 128 GB RDIMMs run continuously?

Each module is rated at 1.10 V, the standard DDR5 RDIMM voltage, so the kit runs at the board's default power envelope with no extra voltage headroom needed.

Does the registered ECC design add fan noise or heat compared with unbuffered sticks?

The registered buffer reduces electrical load on the memory controller, and the modules have no heat spreader, so thermal output matches standard 288-pin DDR5 RDIMMs under sustained load.

Must the Supermicro H14DSH already be populated with a specific CPU or BIOS revision for this 512 GB kit to post?

The kit is validated for the H14DSH motherboard; you only need a CPU and BIOS that support 128 GB 2Rx4 RDIMMs at DDR5 6400 and the correct DIMM population order from the board manual.

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