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Green DDR5 RDIMM circuit board with gold edge connectors and black memory chips

NEMIX RAM

NEMIX RAM 64GB DDR5 4800 CL40 2Rx4 1.1V ECC RDIMM Lenovo ThinkSystem 4X77A81441 memory upgrade

SKU CH-6A3C-Z03PP

64GB DDR5 4800 ECC RDIMM module with CL40 latency and 1.1V operation for Lenovo ThinkSystem servers

  • Total capacity64 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 64 GB capacity expands server memory headroom
  • DDR5 4800 speed delivers high bandwidth throughput
  • ECC registered design protects data integrity
  • 1 V operation reduces power consumption
  • Validated for Lenovo ThinkSystem 4X77A81441 compatibility

64GB DDR5 4800 ECC RDIMM for Lenovo ThinkSystem

This 64GB DDR5 4800 ECC registered DIMM is built for Lenovo ThinkSystem servers that use AMD processors. It delivers 64GB of capacity in a single 288-pin module with error-correcting code and registered buffering for data integrity.

IT teams upgrading compatible Lenovo ThinkSystem

Buyers needing non-ECC memory, unbuffered modules, or a different pin count should look elsewhere. Systems that do not support DDR5 4800 registered ECC RDIMMs cannot use this module.

One 64GB module at DDR5 4800 with CL40 latency

The 2Rx4 organization and 1.1V operation suit high-density server configurations. Workloads requiring faster speeds, lower latency, or larger multi-module kits will exceed what this single DIMM provides.

How it compares

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

Price $1,652.99
Pricier than about 66% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $25.83 per GB
Pricier than about 71% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineLenovo Server/Workstation Compatible Series Memory
Model nameLenovo DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-924K1
Total capacity64 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 systemsLenovo
In the box
Included items64 GB (1 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Does this 64 GB DDR5 4800 CL40 RDIMM require a Lenovo ThinkSystem server with an AMD processor to operate?

Yes, the module is validated for Lenovo ThinkSystem servers using AMD processors and fits a 288-pin DDR5 RDIMM slot.

Will this registered ECC DDR5 4800 module function in a system that also has slower DDR5 memory installed?

The server will run all DDR5 modules at the speed of the slowest installed kit; this 4800 MT/s CL40 RDIMM will downclock to match slower DDR5.

How can I confirm the module is running at DDR5 4800 with CL40 latency after installation?

Check the BIOS memory information or use a system tool such as dmidecode to verify the configured speed shows 4800 MT/s and CAS latency 40.

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