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Green rectangular circuit board with gold edge connectors and black memory chips, no heat spreader

NEMIX RAM

NEMIX RAM 64GB DDR5 4800 ECC RDIMM 2Rx4 CL40 1.1V 288-pin Lenovo ThinkSystem 4X77A94006 memory upgrade

SKU CH-4XZC-52DNW

A 64 GB DDR5-4800 ECC registered DIMM with CL40 latency and 1.1 V 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 DDR5 4800 MHz capacity for heavy server workloads
  • ECC registered design detects and corrects data errors automatically
  • 2Rx4 rank organisation maximises memory density per slot
  • 1 V operating voltage reduces power draw in dense configurations
  • Validated for Lenovo ThinkSystem 4X77A94006 compatibility

Lenovo ThinkSystem 4X77A94006 compatible DDR5 RDIMM

This 64GB DDR5 4800MHz ECC registered DIMM is validated for Lenovo ThinkSystem servers using Intel processors. It targets administrators who need single-module capacity expansion in mission-critical environments.

Registered ECC design for server motherboards

The 2Rx4 registered architecture adds a buffer between the memory controller and DRAM chips, reducing electrical load on the CPU bus. ECC circuitry detects and corrects single-bit errors to protect data integrity under sustained workloads.

1.1V operation with major OEM DRAM chips

Modules use Samsung, Micron or Hynix components tested under load before shipment. The low 1.10V voltage aligns with DDR5 baseline power targets for dense server configurations.

How it compares

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

Price $1,755.99
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 $27.44 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 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 the CL40 latency become a bottleneck under sustained server workloads?

CL40 is the rated CAS latency at DDR5 4800 speed; it is the primary timing figure that determines access delay during continuous operation.

How much heat does the 1.1V registered module generate when running 24/7?

The module operates at 1.10V without a heat spreader; registered DDR5 RDIMMs at this voltage typically stay within standard server thermal limits under constant load.

Which Lenovo ThinkSystem servers accept this 288-pin 2Rx4 RDIMM?

It is validated for Lenovo ThinkSystem platforms that use the 4X77A94006 part number and support DDR5 4800 ECC registered memory.

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