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Green bare DDR5 RDIMM module with gold edge connectors and black memory chips

NEMIX RAM

NEMIX RAM 32GB DDR5 4800 CL40 1Rx4 1.1V 288-pin ECC RDIMM memory upgrade

SKU CH-ZVA9-KGDQB

32 GB DDR5-4800 ECC registered RDIMM, CL40, 1.1 V, 288-pin, 1Rx4 for Lenovo ThinkSystem servers

  • Total capacity32 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 32 GB capacity expands server memory headroom
  • DDR5 4800 MT/s speed feeds AMD-based ThinkSystem workloads
  • ECC registered design corrects errors for mission-critical uptime
  • 10 V operation reduces power draw per module
  • 288-pin RDIMM form factor fits Lenovo 4X77A81439 qualified slots

Lenovo ThinkSystem DDR5 ECC RDIMM

This 32GB DDR5 4800 module delivers ECC error correction and registered signalling for Lenovo ThinkSystem servers based on AMD processors. It operates at 1.10V with CL40 latency in a single 288-pin RDIMM.

IT administrators expanding qualified Lenovo

The part matches Lenovo part number 4X77A81439 and is validated for those specific AMD-based ThinkSystem models. Builders using non-Lenovo motherboards, desktop chipsets, or systems requiring unbuffered DIMMs should select different memory.

1Rx4 registered organisation

The single-rank 1Rx4 layout with registered buffering defines electrical loading on the memory controller; confirm the server DIMM population rules accept this rank configuration before purchasing.

How it compares

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

Price $829.99
Pricier than about 58% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $25.94 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 numberMR38400-314K1
Total capacity32 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 systemsLenovo
In the box
Included items32 GB (1 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Will the 288-pin DDR5 RDIMM fit my Lenovo ThinkSystem server DIMM slots?

Yes, the 288-pin DDR5 RDIMM form factor matches Lenovo ThinkSystem server memory slots designed for registered ECC modules.

What is the correct way to seat this registered ECC module, and what step do installers often miss?

Align the notch with the slot key, press firmly until both retention clips click, and ensure the server BIOS recognises the full 32 GB capacity at 4800 MT/s.

How do I know when this ECC RDIMM should be replaced in a production server?

Monitor the system event log for corrected ECC error counts; a rising trend indicates the module should be swapped before uncorrectable errors occur.

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