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Green circuit board with black memory chips, gold edge connector, no heat spreader

NEMIX RAM

NEMIX RAM 32GB DDR5 4800 CL40 2Rx8 1.1V 288-Pin ECC RDIMM Lenovo 4X77A77031 memory upgrade

SKU CH-BWPK-SVVTR

Adds 32GB DDR5 4800 ECC registered memory to compatible 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 speed delivers high bandwidth for demanding workloads
  • ECC registered design protects data integrity in mission-critical systems
  • 1 V operation reduces power draw per module
  • 288-pin RDIMM form factor fits compatible Lenovo ThinkSystem servers

32 GB DDR5 4800 registered ECC module

This single 32 GB DDR5 4800 RDIMM delivers error-correcting registered memory for Lenovo ThinkSystem servers built on Intel platforms. It runs at 1.1 V with a CL40 latency and uses a 2Rx8 organisation based on major OEM DRAM chips. The 288-pin form factor matches the memory slots qualified for the 4X77A77031 part number.

IT teams upgrading compatible ThinkSystem servers

The module suits administrators adding capacity to qualified Lenovo Intel-based servers that require registered ECC DDR5 at 4800 MT/s. It is not intended for workstations or desktops that accept only unbuffered UDIMMs, nor for systems limited to lower DDR5 speeds or different pin counts. Builders needing non-ECC memory or a different voltage should look elsewhere.

CL40 latency at 4800 MT/s

The CAS latency of CL40 at the rated 4800 MT/s speed is the key timing parameter that determines whether this RDIMM matches the server memory controller requirements. Verify the platform specification calls for CL40 before installation.

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 numberMR38400-328K1
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 rank2Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsLenovo
In the box
Included items32 GB (1 × 32 GB) DDR5 4800 MHz PC5-38400 2Rx8 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Does the 288-pin DDR5 RDIMM fit a standard server DIMM slot?

Yes, the 288-pin DDR5 RDIMM form factor matches the standard registered DIMM slot used in compatible Lenovo ThinkSystem servers.

What is the correct seating procedure for this 2Rx8 registered module?

Align the notch on the module with the key in the slot, press down firmly until both retention clips click into place, and verify the module sits evenly.

Will the Samsung, Micron or Hynix chips on this module require any firmware updates over time?

The memory chips themselves do not require firmware updates; any related updates would come from the server BIOS or management controller.

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