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Two green DDR5 RDIMM modules, no heat spreaders, gold edge connectors

NEMIX RAM

NEMIX RAM 128GB 2x64GB DDR5 4800 CL40 ECC RDIMM Supermicro H13SRH memory upgrade

SKU CH-W3F3-52CKH

DDR5 4800 ECC RDIMM kit adds 128 GB of registered memory to a Supermicro H13SRH server

  • 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

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Speed 4800MHz

  • 128 GB total capacity for memory-intensive workloads
  • DDR5 4800 speed matches the board's rated frequency
  • CL40 latency and 1.1 V voltage meet the controller's exact timing
  • Registered ECC design corrects single-bit errors on the fly
  • 2 Rx4 288-pin RDIMM form factor fits the Supermicro H13SRH motherboard

Supermicro H13SRH DDR5 ECC RDIMM Kit

This 128GB kit contains two 64GB DDR5-4800 Registered ECC modules built to the exact rank, voltage and timing the Supermicro H13SRH motherboard expects. The 2Rx4 organization and 1.1V operation let the memory controller recognise full capacity at rated speed without manual tuning.

Registered Buffer and ECC Stability

The registered architecture reduces electrical load on the memory controller so every slot runs fully populated at 4800 MT/s while on-die ECC corrects single-bit errors in flight. This combination prevents silent data corruption and unplanned reboots in production workloads.

Suits H13SRH Builders Needing 128GB

Ideal for administrators populating a Supermicro H13SRH with a matched 128GB RDIMM pair backed by lifetime replacement support. Not for systems that require UDIMM or SODIMM form factors, non-ECC memory, speeds above 4800 MT/s, or capacities beyond 128GB per kit.

How it compares

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

Price $3,058.99
Pricier than about 73% 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 $23.90 per GB
Pricier than about 69% 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

Other versions of this model

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Questions about this item

Will the 2Rx4 registered ECC RDIMM modules need firmware updates or re-seating over time?

The modules are a verified fit for the Supermicro H13SRH motherboard and run at the board's expected 1.1V and CL40 timings, so no firmware updates or routine re-seating are required after correct installation.

What limit appears first when the 128GB kit runs at DDR5-4800 continuously?

The registered architecture offloads the memory controller, allowing every slot to stay fully populated at the rated 4800 MT/s speed without down-clocking, so the first limit is the motherboard's maximum supported capacity rather than a memory bottleneck.

How much heat and power do the two 64GB modules produce at 1.1V all day?

Each module operates at 1.1V with no heat spreader, so total power draw stays low and thermal output is minimal; standard server airflow across the 288-pin RDIMM slots is sufficient for continuous operation.

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