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Twelve green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 1.5TB 12x128GB DDR5 4800 CL40 2Rx4 ECC RDIMM Supermicro H13DSG-O-CPU-D

SKU CH-920T-4GCMK

1.5 TB kit of twelve 128 GB DDR5 4800 CL40 2Rx4 ECC registered RDIMMs built for the Supermicro H13DSG-O-CPU-D motherboard

  • Total capacity1.5 TB (12 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 1.5TB 12X128GB

Show 30 more
  • 5 TB total capacity from twelve 128 GB DDR5 modules
  • DDR5-4800 (PC5-38400) speed with CL40 latency at 1.1 V
  • 2Rx4 registered ECC RDIMM architecture for full-slot stability
  • 288-pin form factor verified for Supermicro H13DSG-O-CPU-D motherboard
  • Lifetime replacement warranty with US-based technical support

1.5 TB DDR5 RDIMM kit for Supermicro H13DSG-O-CPU-D

This kit delivers 1.5 TB of DDR5-4800 registered ECC memory in twelve 128 GB modules. It is built for the Supermicro H13DSG-O-CPU-D motherboard where the memory controller expects 2Rx4 registered DIMMs at 1.1 V. The exact rank, voltage and timing match the board's requirements so the full capacity is recognised at rated speed.

Suited for fully populated server builds needing

This product suits administrators upgrading a Supermicro H13DSG-O-CPU-D to maximum registered ECC capacity with modules that the board's population rules accept. Builders who need unbuffered UDIMMs, SODIMMs or a different voltage should look at other memory types because this kit is registered RDIMM only.

2Rx4 registered ECC at 1.1 V decides fit

The single specification that determines compatibility is the 2Rx4 registered ECC organisation at 1.1 V with CL40 timing. If the motherboard manual calls for a different rank structure, voltage or unbuffered modules, this kit will not function correctly in that system.

How it compares

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

Price $42,729.99
Pricier than about 95% of the 21,161 comparable items (median $397.99).
Total capacity 1.5 TB (12 × 128 GB)
Higher than about 97% of the 20,941 comparable items (median 32 GB).
Price per GB $28.49 per GB
Pricier than about 80% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR38400-724K12
Total capacity1.5 TB (12 × 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 items1.5 TB 12 × 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

Should I buy the 12-module kit or look for a smaller capacity?

The kit provides 1.5TB total across 12 modules of 128GB each, matching the Supermicro H13DSG-O-CPU-D motherboard's population rules for full-capacity operation.

What does the DDR5 4800 rating deliver once installed?

The modules run at 4800 MT/s with CL40 latency at 1.1V, giving the memory controller the exact timing and voltage it expects for stable, rated-speed performance.

How does the 288-pin RDIMM interface affect real-world use?

Registered buffering offloads the controller so all 12 slots can run fully populated at 4800 MT/s, while ECC corrects single-bit errors to prevent silent data corruption.

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