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Two green DDR5 RDIMM modules with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 64GB (2x32GB) DDR5 4800 ECC RDIMM CL40 1.1V 288-Pin Server Memory Upgrade

SKU CH-X263-6DK6H

64GB dual-channel DDR5 ECC registered server memory kit running at 4800 MT/s with CL40 latency and 1.1V operation

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • ECC protection prevents data corruption in critical workloads
  • Registered design stabilises signal integrity on dense server boards
  • 4800 MT/s throughput accelerates memory-bound applications
  • 1 V operation reduces power draw per module
  • Dual 32 GB sticks deliver 64 GB total capacity

64 GB DDR5 ECC RDIMM Kit

This 64 GB kit provides two 32 GB DDR5 4800 registered DIMMs with ECC and a CL40 latency. It operates at 1.1 V and uses a 288-pin form factor designed for server platforms. The modules are built with major OEM chips and validated for Supermicro SYS-111C-NR, SYS-521C-NR and X13SEDW-F systems.

Who This Suits and Who Should Look Elsewhere

Administrators expanding memory in the listed Supermicro SuperServer models will find a tested, registered ECC solution that matches the platform requirements. Buyers needing non-ECC unbuffered DIMMs for consumer desktop boards cannot use this registered kit. Systems requiring a different speed grade, voltage or pin count should select memory specified for those parameters.

The Deciding Specification

Registered ECC DDR5 RDIMM format is the single attribute that determines compatibility. Only motherboards with DDR5 RDIMM slots supporting registered error-correcting modules at 4800 MT/s and 1.1 V can accept this kit.

How it compares

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

Price $1,752.99
Pricier than about 66% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $27.39 per GB
Pricier than about 76% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineSuperMicro Server/Workstation Compatible Series Memory
Model nameSuperMicro DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-314K2
Total capacity64 GB (2 × 32 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 rank1Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items64 GB (2 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does the 288-pin DDR5 RDIMM fit the memory slots on the SuperMicro SYS-111C-NR and SYS-521C-NR?

Yes, the 288-pin DDR5 RDIMM modules are designed for the DDR5 slots on the SuperMicro SYS-111C-NR, SYS-521C-NR and X13SEDW-F motherboards.

Do I need to populate specific DIMM slots first when installing the two 32GB modules?

Install each 32GB module into the primary channel slots indicated in the SuperMicro motherboard manual; the common mistake is using secondary slots before the primary ones are filled.

Will the Samsung, Micron or Hynix chips on these modules need any firmware updates later?

The memory chips do not require firmware updates; the only future action may be reseating the modules if the server is moved or vibrated heavily.

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