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Eight green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM DDR5 4800 ECC RDIMM 1TB (8x128GB) CL40 1.1V 2Rx4 Supermicro H13SSW

SKU CH-SZAY-312FW

1 TB DDR5 ECC registered kit with eight 128 GB modules at 4800 MT/s, CL40, 1.1 V, 2Rx4, 288-pin, validated for Supermicro H13SSW

  • Total capacity1 TB (8 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 1TB 8X128GB

Show 24 more
  • 1TB capacity with eight 128GB modules for maximum server density
  • DDR5 4800 speed rated at PC5-38400 for high-throughput workloads
  • Registered ECC architecture corrects single-bit errors to protect data integrity
  • 1V operating voltage matches platform requirements for stable operation
  • Verified compatibility with Supermicro H13SSW motherboard for assured fitment

Exact-match server upgrade

This 1 TB kit delivers eight 128 GB DDR5 RDIMMs clocked at 4800 MT/s with CL40 timing at 1.1 V. It targets administrators expanding a Supermicro H13SSW platform that requires registered ECC modules in every populated slot.

Registered ECC for full population

The 2Rx4 registered architecture buffers address and command signals so the memory controller can drive all eight 288-pin slots at rated speed without signal degradation. ECC corrects single-bit errors on the fly, protecting data integrity in production workloads.

Low-voltage DDR5 efficiency

Operating at 1.1 V, the modules draw minimal power while maintaining 4800 MT/s throughput across a fully populated configuration. The registered design reduces electrical load on the controller, helping keep thermals stable in dense server chassis.

How it compares

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

Price $33,235.99
Pricier than about 93% of the 21,161 comparable items (median $397.99).
Total capacity 1 TB (8 × 128 GB)
Higher than about 93% of the 20,941 comparable items (median 32 GB).
Price per GB $33.24 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 numberMR38400-724K8
Total capacity1 TB (8 × 128 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 items1 TB 8 × 128 GB DDR5 4800 MHz PC5-38400 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Will the eight 128GB modules run at the rated 4800 speed without downclocking when all slots are populated?

Yes, the kit is spec-matched to the Supermicro H13SSW so the memory controller recognises the exact rank, voltage and timing and runs every slot at DDR5-4800.

How much heat do the modules produce under continuous load and do they need active airflow?

The RDIMMs operate at 1.10 V with no heat spreader; registered buffering reduces electrical load, but sustained full-capacity use still requires adequate chassis airflow to keep temperatures in spec.

Does this kit work in a standard desktop board or only in the Supermicro H13SSW?

It is built for the H13SSW's 288-pin RDIMM slots and registered ECC protocol; consumer desktop boards that accept only UDIMM memory will not recognise the modules.

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