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Two green DDR5 RDIMM modules without heat spreaders, 288-pin, 128GB kit

NEMIX RAM

NEMIX RAM DDR5 6400 128GB 2x64GB 4Rx4 CL52 1.1V RDIMM Supermicro X14SDI-36C-SP3F

SKU CH-W5JG-78NH2

A 128 GB DDR5-6400 registered ECC kit with two 64 GB modules, CL52 at 1.1 V, built for the Supermicro X14SDI-36C-SP3F motherboard

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 128GB 2X64GB

  • 128 GB total capacity from two 64 GB modules for dense server workloads
  • DDR5 6400 speed with CL52 latency delivers rated throughput for the platform
  • 4Rx4 Registered ECC architecture offloads the memory controller and corrects single-bit errors
  • 1 V operation matches the motherboard's voltage requirement for stable full-population operation
  • 288-pin RDIMM form factor fits the Supermicro X14SDI-36C-SP3F motherboard's DIMM slots

128 GB DDR5 RDIMM kit for Supermicro X14SDI-36C-SP3F

This 128 GB kit contains two 64 GB DDR5 6400 registered ECC RDIMMs built to the exact rank, voltage and timing the Supermicro X14SDI-36C-SP3F memory controller expects. The 4Rx4 organisation and 1.10 V operation match the board's population rules so the full capacity is recognised at rated speed. It is not for systems that require unbuffered UDIMMs or a different DDR generation.

Thermals noise and power at 1.10 V

Operating at 1.10 V the modules draw minimal power and run without a heat spreader, relying on the server's forced-air chassis cooling. Registered buffering reduces electrical load on the memory controller, helping keep the memory subsystem stable when every slot is populated. No active cooling or acoustic profile is specified for the DIMMs themselves.

What the kit changes for your server

The two-module kit populates a matched pair of slots, enabling the board's registered ECC architecture to correct single-bit errors on the fly and prevent silent data corruption. Exact-match specifications mean the firmware initialises the memory at DDR5 6400 without manual tuning. Buyers who need a different capacity or unbuffered memory must select another part.

How it compares

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

Price $4,003.99
Pricier than about 76% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (2 × 64 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $31.28 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 numberMR51200-944K2
Total capacity128 GB (2 × 64 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 rank4Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB 2 × 64 GB DDR5 6400 MHz PC5-51200 4Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

How do I install the 288-pin RDIMM modules on the Supermicro X14SDI-36C-SP3F, and what step is often missed?

Power off the server, open the chassis, and seat each 64 GB module firmly until the ejector clips click. The step often missed is following the motherboard's exact DIMM population order so the 4Rx4 registered DIMMs initialise at DDR5-6400 with CL52 timing.

What maintenance or replacement will the 128 GB DDR5 ECC RDIMM kit need over its service life?

The modules have no heat spreaders and no moving parts, so no routine maintenance is required. ECC corrects single-bit errors automatically; only a persistent multi-bit fault would warrant replacing the affected 64 GB RDIMM under the lifetime replacement coverage.

What is the first limit that appears when the 4Rx4 registered DIMMs run sustained workloads at 6400 MT/s?

The registered buffer and on-die ECC keep signal integrity stable, so the first practical limit is the motherboard's maximum supported capacity per channel rather than thermal throttling or voltage drift at the specified 1.1 V.

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