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Two green DDR5 RDIMM modules without heat spreaders, 288 pins each

NEMIX RAM

NEMIX RAM DDR5 6400 CL52 128GB 2x64GB RDIMM ECC Registered Supermicro H13SSW memory upgrade

SKU CH-S83R-RTW0F

A 128GB DDR5 kit (2 × 64GB) running at 6400MHz with CL52 latency, 1.1V voltage, ECC and registered buffering, validated for Supermicro H13SSW motherboards

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 128 GB capacity from two 64 GB modules
  • DDR5 6400 speed with CL52 latency
  • ECC and registered design prevents data errors
  • 1 V operation at standard DDR5 voltage
  • 288-pin RDIMM form factor fits Supermicro H13SSW

Capacity and fit

This 128 GB kit delivers two 64 GB DDR5 RDIMMs rated at 6400 MT/s with CL52 latency and 1.1 V operation. The modules use a 2Rx4 registered ECC design that matches the Supermicro H13SSW memory controller requirements for full-capacity recognition at rated speed.

Build integration

Each stick uses the 288-pin RDIMM form factor so it seats only in registered DIMM slots, not UDIMM or SODIMM sockets. The registered architecture buffers address and command signals, allowing the memory controller to drive a fully populated configuration without signal degradation. On-die ECC corrects single-bit errors in flight, preventing silent data corruption that could halt production workloads.

Upgrade context

This kit replaces lower-capacity or slower DDR5 RDIMMs when the server needs maximum registered memory per channel at the platform's native data rate. The jump is worthwhile when the workload demands the full 128 GB at 6400 MT/s with hardware error correction and the motherboard's qualified-vendor list includes this part number. Builders needing unbuffered DIMMs, SODIMMs, or a different voltage or rank structure should look elsewhere.

How it compares

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

Price $4,558.99
Pricier than about 78% 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 $35.62 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 numberMR51200-924K2
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 rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB 2 × 64 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 under continuous server workloads?

The kit runs at DDR5 6400 (PC5-51200) with CL52 timing at 1.1 V, matching the Supermicro H13SSW memory controller spec so the rated frequency is maintained at full 128 GB capacity.

How much heat and power do two 64 GB RDIMMs draw in a fully populated chassis?

Each module operates at 1.10 V with no heat spreader; registered buffering reduces electrical load on the controller, keeping thermals and power draw within standard DDR5 RDIMM limits for 24/7 operation.

Does my Supermicro H13SSW need a specific BIOS revision or CPU to recognise this 2Rx4 kit?

The kit is validated for the H13SSW motherboard; consult the board manual for approved DIMM population order and any BIOS version notes before installation.

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