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Twelve bare green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 768GB (12x64GB) DDR5 4800 CL40 ECC RDIMM THINKMATE 521C-NR memory upgrade

SKU CH-DWE8-DJDQ8

768 GB DDR5 server memory kit with twelve 64 GB registered ECC modules at 4800 MHz CL40 for Thinkmate 521C-NR

  • Total capacity768 GB (12 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Massive 768 GB capacity from twelve 64 GB modules
  • DDR5 4800 speed with PC5-38400 bandwidth rating
  • ECC registered design protects data integrity
  • Low 1.1 V operation reduces server power draw
  • Validated for ThinkMate SuperServer 521C-NR systems

System-Specific DDR5 Kit

This NEMIX RAM kit delivers 768GB across twelve 64GB DDR5 modules built for the THINKMATE SuperServer 521C-NR. It targets administrators scaling memory in that exact platform where registered ECC DIMMs are required.

Registered ECC Build

Each 288-pin RDIMM uses a 2Rx4 organisation and runs at 1.10V without a heat spreader. The registered buffer and on-die ECC protect data integrity in multi-socket workloads, while the low-profile form factor fits dense server chassis.

4800 MT/s CL40 Speed

The memory operates at DDR5 4800 (PC5-38400) with CAS latency 40. That single speed grade determines whether the kit matches the server’s qualified memory list; no other frequency or timing is supported by this part number.

How it compares

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

Price $20,027.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 768 GB (12 × 64 GB)
Higher than about 92% of the 20,941 comparable items (median 32 GB).
Price per GB $26.08 per GB
Pricier than about 72% 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 numberMR38400-924K12
Total capacity768 GB (12 × 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
Heat spreaderNo
Memory rank2Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsTHINKMATE
In the box
Included items768 GB (12 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does the DDR5 4800 interface run at the full 4800 MT/s in the ThinkMate 521C-NR?

Yes, the kit is rated DDR5 4800 (PC5-38400) and will operate at that speed when the server’s memory controller supports it.

What physical slot and clearance does this 288-pin RDIMM kit require?

Each module uses a standard 288-pin DDR5 RDIMM form factor and fits the 521C-NR’s DIMM slots; no heat spreader is present so low-profile clearance is not an issue.

How are the 12 modules installed and what step is often missed?

Populate all twelve slots following the 521C-NR’s population guide, then verify in BIOS that ECC and registered mode are active — skipping the BIOS check is the common mistake.

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