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Six green DDR5 RDIMM modules in static bags

NEMIX RAM

NEMIX RAM 768GB 6x128GB DDR5 6400 CL52 2Rx4 ECC RDIMM Supermicro H14SSF memory upgrade

SKU CH-XMFZ-YJR7C

Six 128 GB DDR5 RDIMMs deliver 768 GB of registered ECC memory at 6400 MT/s with CL52 timing and 1.1 V operation for the Supermicro H14SSF

  • Total capacity768 GB (6 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 768 GB capacity from six 128 GB modules lets you fully populate the Supermicro H14SSF
  • DDR5 6400 speed with CL52 latency delivers rated throughput the memory controller expects
  • Registered ECC architecture offloads the controller and corrects single-bit errors for enterprise stability
  • 1 V operation matches the board's voltage requirement for reliable full-population operation
  • 288-pin RDIMM form factor fits the H14SSF slots exactly as the motherboard specifies

Supermicro H14SSF 768GB DDR5 ECC RDIMM kit

This 768GB kit contains six 128GB DDR5 6400 CL52 2Rx4 ECC Registered RDIMM modules. It is built for the Supermicro H14SSF motherboard and runs at the rated 1.10V voltage.

Who this fits and who it does not

Suits administrators populating every slot on a compatible Supermicro H14SSF platform with registered ECC memory. Not for systems that require unbuffered UDIMM or SODIMM form factors, or boards that do not support 2Rx4 registered modules.

Deciding specification: DDR5 6400 CL52 2Rx4

The modules operate at DDR5 6400 (PC5-51200) with CL52 latency, 2Rx4 organisation and registered ECC. These combined parameters determine whether the memory controller recognises the full 768GB capacity at rated speed.

How it compares

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

Price $25,651.99
Pricier than about 92% of the 21,161 comparable items (median $397.99).
Total capacity 768 GB (6 × 128 GB)
Higher than about 92% of the 20,941 comparable items (median 32 GB).
Price per GB $33.40 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 numberMR51200-724K6
Total capacity768 GB (6 × 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 items768 GB 6 × 128 GB DDR5 6400 MHz PC5-51200 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Will the 6400 MT/s speed hold when all six 128 GB RDIMMs are populated?

The kit is spec‑matched to the Supermicro H14SSF memory controller so the full 768 GB runs at the rated DDR5 6400 speed with CL52 timing.

What thermal load should I expect from the modules running 24/7 at 1.1 V?

Each RDIMM operates at 1.10 V without a heat spreader; registered buffering reduces controller stress, keeping power draw and heat within normal server DIMM limits.

Does the H14SSF board need a specific BIOS revision or CPU to recognise this 6‑DIMM kit?

The modules are verified for the Supermicro H14SSF motherboard; consult the board manual for approved population order and any BIOS requirements before installation.

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