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Four green 288-pin DDR5 server memory modules, no heat spreaders, 512GB total

NEMIX RAM

NEMIX RAM 512GB (4x128GB) DDR5 4800 CL40 1.1V 4Rx4 ECC RDIMM THINKMATE 521C-NR memory upgrade

SKU CH-E4AM-DGZ0F

A 512 GB DDR5 4800 CL40 4Rx4 ECC registered RDIMM kit of four 128 GB modules at 1.1 V for ThinkMate 521C-NR servers

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Massive 512 GB capacity scales demanding workloads
  • DDR5 4800 speed accelerates data throughput
  • ECC registered design protects critical data integrity
  • 1 V operation reduces server power draw
  • Four 128 GB modules simplify high-density upgrades

512GB DDR5 ECC RDIMM Kit for THINKMATE 521C-NR

This 512GB kit contains four 128GB DDR5 4800 registered ECC modules built for the THINKMATE Supermicro SuperServer 521C-NR. Each stick runs at 1.1V with a CL40 latency and a 4Rx4 organisation. The 288-pin RDIMM form factor fits the server's memory slots directly.

Suited for administrators expanding a 521C-NR

Buyers who need registered ECC memory validated for this specific SuperServer model will find the kit matches the platform requirements. Systems that require unbuffered UDIMMs, non-ECC modules, lower-density sticks or a different pin count cannot use this memory.

Registered 4Rx4 ECC at DDR5 4800 with 1.1V operation

The modules are registered ECC RDIMMs organised as 4Rx4 and rated for DDR5 4800 (PC5-38400) at CL40 with a 1.1V supply. This combination of registration, rank architecture, speed and voltage determines whether the kit will post and run stably in the target server.

How it compares

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

Price $14,702.99
Pricier than about 90% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $28.72 per GB
Pricier than about 81% 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 numberMR38400-744K4
Total capacity512 GB (4 × 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
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsTHINKMATE
In the box
Included items512 GB (4 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How does the CL40 latency affect performance during sustained workloads?

CL40 is the CAS latency rating for these DDR5 4800 modules; lower latency would reduce access delay but this kit is specified at CL40 for stable registered ECC operation.

What thermal load should I expect from the 1.1 V registered DIMMs running continuously?

The modules operate at 1.1 V without heat spreaders, so sustained server use will rely on chassis airflow to keep the 4Rx4 RDIMMs within safe temperature limits.

Which server platform must I already have for this 4 x 128 GB kit to function?

This memory kit is validated for the Thinkmate Supermicro SuperServer 521C-NR and requires that compatible DDR5 RDIMM platform to work.

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