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Four green DDR5 RDIMM modules with gold contacts, no heat spreaders

NEMIX RAM

NEMIX RAM 512GB (4×128GB) DDR5 6400 CL52 ECC Registered RDIMM memory upgrade

SKU CH-KE9F-K428E

Four 128 GB DDR5 registered ECC modules totalling 512 GB at 6400 MHz CL52 1.1 V for the Supermicro H14SST-GE motherboard

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 512GB total capacity from four 128GB modules for maximum server density
  • DDR5-6400 speed with CL52 latency delivers rated throughput for Supermicro H14SST-GE
  • Registered ECC architecture offloads the controller and corrects single-bit errors automatically
  • 1V operation at 2Rx4 rank matches the board's exact electrical requirements
  • 288-pin RDIMM form factor ensures correct physical fit in every supported slot

Exact-Match 512GB Kit

This NEMIX RAM kit delivers 512GB of DDR5 memory in four 128GB Registered ECC RDIMMs. It is built for administrators upgrading a Supermicro H14SST-GE server who need the precise rank, voltage and timing the board expects.

DDR5-6400 CL52 2Rx4 Registered

The modules run at DDR5-6400 (PC5-51200) with CL52 latency at 1.1V in a 2Rx4 organisation. This exact speed, latency, rank structure and registered buffer combination is what the motherboard's memory controller requires to recognise full capacity at rated speed.

For full-population server builds

Suits IT teams populating every slot on a compatible Supermicro platform where registered ECC stability and single-bit error correction are mandatory. Not for workstations or desktops that accept only unbuffered UDIMMs, nor for systems limited to lower capacities or different DDR generations.

How it compares

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

Price $17,231.99
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 $33.66 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

What does DDR5-6400 actually deliver once the kit is installed in the Supermicro H14SST-GE?

The modules run at 6400 MT/s with CL52 timing at 1.1 V, giving the memory controller the exact speed and latency it expects for full-capacity operation.

How does the PC5-51200 rating limit real-world throughput?

PC5-51200 is the standard designation for DDR5-6400; the registered buffer lets the motherboard sustain that data rate across all four slots when fully populated.

What physical clearance does the 288-pin RDIMM kit need in the chassis?

Standard 288-pin RDIMM height with no heat spreader, so it fits any Supermicro H14SST-GE DIMM slot without extra vertical clearance.

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