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Two green DDR5 RDIMM modules, black chips, no heat spreader

NEMIX RAM

NEMIX RAM 128GB (2×64GB) DDR5-4800 ECC RDIMM CL40 1.1V 2Rx4 Supermicro H13SSW

SKU CH-BDFA-7J4PP

A 128 GB DDR5 ECC registered memory kit with two 64 GB modules rated at 4800 MHz CL40 1.1 V for the Supermicro H13SSW motherboard

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 128GB 2X64GB

Show 24 more
  • 128 GB kit enables full-capacity server upgrades
  • DDR5-4800 speed matches board-rated performance
  • CL40 latency at 1.1 V reduces power draw
  • 2Rx4 registered ECC prevents silent data corruption
  • Verified fitment for Supermicro H13SSW motherboard

128GB DDR5-4800 ECC RDIMM kit for Supermicro H13SSW

This 128GB kit contains two 64GB DDR5-4800 registered ECC modules built to the 288-pin RDIMM form factor. It targets administrators upgrading a Supermicro H13SSW motherboard where full-capacity population and error correction are required. The 2Rx4 organisation and 1.10V operating voltage match the board's native memory controller expectations.

Verify DIMM population rules

Before ordering, consult the Supermicro H13SSW documentation for approved DIMM population order, supported capacities per channel, and any BIOS version requirements. The kit uses registered RDIMM modules, which are not interchangeable with unbuffered UDIMM or SODIMM types. Confirm that the board accepts 2Rx4 registered ECC at the rated speed.

Registered ECC architecture maintains stability

The registered buffer reduces electrical load on the memory controller, allowing all slots to remain populated at 128GB without signal degradation. On-die ECC corrects single-bit errors in real time, preventing silent data corruption during sustained server workloads. CL40 latency and 1.10V operation keep timing consistent across extended duty cycles.

How it compares

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

Price $3,618.99
Pricier than about 75% 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 $28.27 per GB
Pricier than about 79% 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 numberMR38400-924K2
Total capacity128 GB (2 × 64 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
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 4800 MHz PC5-38400 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

What comes in the 128GB kit and do I need anything else to install it?

The kit includes two 64GB DDR5-4800 ECC registered RDIMMs, giving 128GB total. No extra parts are required for installation on a compatible Supermicro H13SSW board.

Why choose the 2Rx4 128GB kit instead of a different capacity or rank?

This 2Rx4 128GB kit matches the Supermicro H13SSW memory population rules exactly, allowing every slot to run fully populated at the rated 4800 speed with ECC and registered buffering.

What does the DDR5-4800 CL40 rating mean for my Supermicro H13SSW server?

The modules will operate at 4800 MT/s with CAS latency 40 at 1.1V, delivering the bandwidth and error correction the H13SSW memory controller expects for stable enterprise workloads.

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