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Two green DDR5 RDIMM modules with gold contacts, no heat spreaders

NEMIX RAM

NEMIX RAM DDR5 128GB 2x64GB 6400MHz CL52 ECC RDIMM Supermicro H13SRH

SKU CH-RCMC-TJPYJ

128 GB DDR5-6400 registered ECC RDIMM kit built for the Supermicro H13SRH motherboard

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Exact DDR5-6400 match for Supermicro H13SRH ensures full-speed operation
  • 128 GB kit (2 × 64 GB) maximises memory capacity per channel
  • Registered ECC RDIMM design corrects single-bit errors and stabilises fully populated slots
  • 2Rx4 organisation with 1.10 V voltage meets server memory controller requirements
  • Lifetime replacement warranty with US-based technical support included

Exact-match DDR5 ECC RDIMM kit

This 128GB kit provides two 64GB DDR5 6400MHz registered ECC modules built to the Supermicro H13SRH motherboard's precise requirements. The 2Rx4 organisation, 1.10V operating voltage and CL52 latency match the board's memory controller so the full capacity is recognised at rated speed without manual tuning.

Suited for fully populated server slots

The registered architecture offloads the memory controller, allowing every supported slot to run fully populated at 6400MHz while ECC corrects single-bit errors on the fly. Builders using unbuffered UDIMMs, SODIMMs or non-ECC modules should look elsewhere because the board requires registered 288-pin RDIMMs.

128GB capacity for memory-intensive workloads

The 2 x 64GB configuration delivers 128GB of DDR5 bandwidth for virtualisation, database and compute tasks that benefit from large registered memory pools. Workloads exceeding this capacity or requiring higher frequencies than 6400MHz will need a platform that supports larger DIMMs or faster memory speeds.

How it compares

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

Price $4,578.99
Pricier than about 79% 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 $35.77 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 my Supermicro H13SRH motherboard recognise this 288-pin DDR5 RDIMM kit at its full 128GB capacity?

The kit matches the board's required 288-pin Registered RDIMM form factor, 2Rx4 rank structure, 1.1V voltage and CL52 timing, so the memory controller detects the full 128GB and runs at the rated 6400MHz speed.

Does this registered ECC RDIMM offload the memory controller when all slots on the H13SRH are populated?

Yes, the registered (buffered) architecture reduces electrical load on the controller, allowing every populated slot to operate at the full 64GB per module capacity while ECC corrects single-bit errors in real time.

How can I confirm the kit is running at 6400MHz with CL52 latency after installation?

Check the BIOS memory information screen or run a tool such as dmidecode or CPU-Z; both will report DDR5-6400 speed, PC5-51200 data rate and CAS latency 52 for each 64GB module.

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