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

NEMIX RAM

NEMIX RAM 32GB (2x16GB) DDR5 4800 CL40 ECC RDIMM for THINKMATE Supermicro SuperServer 521C-NR memory upgrade

SKU CH-3NJF-RJVY0

32 GB dual-channel DDR5 kit with ECC RDIMM modules rated at 4800 MT/s CL40 for the Thinkmate Supermicro SuperServer 521C-NR

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 32 GB dual-channel kit boosts server throughput
  • DDR5 4800 MT/s CL40 registered ECC ensures data integrity
  • 10 V operation reduces power draw per module
  • 288-pin RDIMM form factor fits ThinkMate SuperServer 521C-NR
  • Samsung Micron Hynix chips validated under load

Server ECC RDIMM Kit

This 32GB kit contains two 16GB DDR5 modules built for the THINKMATE Supermicro SuperServer 521C-NR. Registered ECC design protects data integrity in mission-critical workloads. System-specific validation ensures compatibility without guesswork. Ideal for IT teams upgrading qualified enterprise platforms.

Capacity and Headroom

Two 16GB RDIMMs deliver 32GB total at DDR5 4800 with CL40 latency and 1.10V operation. Single-rank 1Rx8 organisation supports dense population on supported boards. Registered buffering reduces electrical load for stable multi-DIMM configurations. Workloads exceeding this capacity will require additional qualified slots.

Deciding Specification

The kit is validated exclusively for the THINKMATE Supermicro SuperServer 521C-NR. DDR5 288-pin RDIMM form factor and registered ECC signalling prevent use in desktop or unbuffered platforms. Buyers with different server models must verify their qualified vendor list before ordering.

How it compares

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

Price $800.99
Pricier than about 58% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (2 × 16 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $25.03 per GB
Pricier than about 70% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineTHINKMATE Server/Workstation Compatible Series Memory
Model nameTHINKMATE DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-618K2
Total capacity32 GB (2 × 16 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
Heat spreaderNo
Memory rank1Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsTHINKMATE
In the box
Included items32 GB (2 × 16 GB) DDR5 4800 MHz PC5-38400 1Rx8 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Will this 4800 CL40 ECC RDIMM kit run stably alongside existing DDR5 modules in my ThinkMate 521C-NR?

The kit is validated for the ThinkMate Supermicro SuperServer 521C-NR and uses standard DDR5 4800 CL40 1.10V timings, so it will operate at the platform's supported speed when mixed with identical-spec modules.

How can I verify the 2x16GB 1Rx8 registered DIMMs are recognised and ECC is active after installation?

Enter the server BIOS or UEFI and confirm 32GB total capacity, 4800 MT/s speed, registered mode and ECC enabled for both 288-pin slots.

What exactly ships in the box and do I need any extra brackets or cables for the 521C-NR?

The package contains only the two 16GB DDR5 4800 CL40 1.10V 288-pin ECC RDIMM modules; no brackets, cables or additional hardware are included or required for this server.

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