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Four green DDR5 RDIMM sticks without heat spreaders, 288-pin, 512 GB kit

NEMIX RAM

NEMIX RAM DDR5 6400 512GB (4×128GB) ECC RDIMM CL52 1.1V 2Rx4 Supermicro H14DSG-OM

SKU CH-XYMW-7BG63

512 GB registered ECC DDR5 kit in four 128 GB modules at 6400 MT/s, CL52, 1.1 V, 2Rx4, validated for the Supermicro H14DSG-OM 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
  • 512 GB total capacity from four 128 GB modules
  • DDR5 6400 speed with CL52 latency for rated performance
  • Registered ECC design corrects single-bit errors automatically
  • 10 V operation matches server memory controller requirements
  • 288-pin RDIMM form factor verified for Supermicro H14DSG-OM

Exact-Match Server Memory Kit

This 512GB kit provides four 128GB DDR5 Registered ECC RDIMMs built for the Supermicro H14DSG-OM motherboard. The modules deliver DDR5 6400 (PC5 51200) speed at CL52 latency with a 1.1V operating voltage. The 2Rx4 rank structure matches the board's memory controller requirements for full-capacity recognition.

Registered Architecture and Thermal Profile

The registered (buffered) design reduces electrical load on the memory controller, allowing all four slots to run fully populated at rated speed without overdriving the signal path. ECC circuitry corrects single-bit errors in real time, preventing silent data corruption that can crash production workloads. Operating at 1.1V keeps power draw low for dense server configurations.

Ready-to-Install Configuration

The kit arrives as a matched set of four modules, eliminating the need to source and validate individual DIMMs for multi-channel operation. No heat spreaders are fitted, so clearance in tightly packed chassis remains unchanged. Installation follows the motherboard manual's population order; the modules are keyed for 288-pin DDR5 slots only and will not fit UDIMM or SODIMM sockets.

How it compares

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

Price $17,377.99
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 $33.94 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

How do I install the four 128GB DDR5 RDIMMs in the Supermicro H14DSG-OM, and which population order is the common mistake?

The kit contains four 288-pin registered ECC modules rated DDR5-6400 CL52 at 1.1V. The Supermicro H14DSG-OM requires a specific DIMM population sequence documented in its manual; the frequent error is filling slots sequentially from one side instead of following the board's prescribed interleaving order.

What maintenance or replacement will the NEMIX RAM DDR5 6400 ECC RDIMM kit need over its service life?

The modules have no heat spreaders and no moving parts, so no periodic maintenance is required. ECC corrects single-bit errors on the fly; if a module develops uncorrectable faults it would be replaced under the lifetime warranty, but no scheduled replacement interval exists.

What is the first limit that appears when the 512GB DDR5-6400 2Rx4 registered kit runs sustained workloads on the H14DSG-OM?

The registered architecture offloads the memory controller, allowing all four slots to run fully populated at the rated 6400 MT/s. The first sustained-use limit is therefore the platform's maximum supported memory bandwidth and thermal envelope, not the DIMMs themselves.

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