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Four green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM MR51200-328K4 128GB (4x32GB) DDR5 6400 CL52 1.1V 2Rx8 ECC Registered RDIMM memory upgrade

SKU CH-Y1ZQ-CAP7T

128 GB DDR5 registered ECC server kit (4 × 32 GB) running at 6400 MT/s, CL52, 1.1 V, 2Rx8, verified for Supermicro H13SSW motherboards

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 128 GB total capacity in a matched 4 × 32 GB kit
  • DDR5 6400 speed with CL52 latency for rated server performance
  • 1 V registered ECC RDIMM reduces controller load and corrects single-bit errors
  • 288-pin 2Rx8 form factor verified for Supermicro H13SSW motherboard
  • Lifetime replacement warranty with US-based technical support included

Capacity and fit

This 128 GB kit delivers four 32 GB DDR5 RDIMM modules rated at 6400 MT/s with CL52 latency and 1.1 V operation. It is built for the Supermicro H13SSW motherboard and matches the board's registered ECC memory population rules.

Thermals noise and power

The modules run at the standard 1.1 V DDR5 voltage without a heat spreader, so power draw stays at the JEDEC baseline for registered ECC parts. Passive cooling in a server chassis with directed airflow keeps temperatures in spec and acoustic output negligible.

Upgrade scope and limits

The kit replaces any lower-capacity RDIMM set or fills empty slots to reach the full 128 GB per channel limit the board supports. It is not for systems that require unbuffered UDIMMs, SODIMM form factors, or non-ECC memory.

How it compares

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

Price $4,856.99
Pricier than about 80% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $37.95 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 numberMR51200-328K4
Total capacity128 GB (4 × 32 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 rank2Rx8
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB 4 × 32 GB DDR5 6400 MHz PC5-51200 2Rx8 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

How do I install the 288-pin DDR5 RDIMM modules in my Supermicro H13SSW, and what step do people often miss?

Power down the server, open the chassis, and insert each 32 GB module into the slots specified by the motherboard manual, pressing until the latches click. The step most people skip is verifying the exact population order in the manual so all 128 GB are recognised at 6400 speed.

What maintenance or replacement will this 2Rx8 Registered ECC kit need over its service life?

The modules have no heat spreader and no moving parts, so no routine maintenance is required. ECC corrects single-bit errors automatically; if a module ever develops uncorrectable errors the lifetime replacement warranty covers a swap.

What limit appears first when the 1.1 V CL52 kit runs sustained workloads on the H13SSW?

The memory controller's maximum supported capacity and population rules are the first constraint. The board manual defines how many 2Rx8 RDIMMs can run at 6400; exceeding that drops speed or prevents boot.

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