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Green circuit board with black memory chips and gold edge connector

NEMIX RAM

NEMIX RAM 16GB DDR4 3200 ECC RDIMM 2Rx8 CL22 288-Pin Lenovo ThinkSystem 4X77A85855 memory upgrade

SKU CH-N6ZR-NC96S

16GB DDR4 3200 ECC RDIMM 2Rx8 CL22 288-Pin registered server memory for Lenovo ThinkSystem

  • Total capacity16 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL22
  • Buffer typeRegistered
  • Rated voltage1.2 V
  • 16 GB DDR4 3200 ECC registered RDIMM for Lenovo ThinkSystem servers
  • CL22 latency at 1.2 V keeps data integrity under heavy workloads
  • 2Rx8 dual-rank organisation maximises memory density per slot
  • 288-pin form factor fits standard DDR4 server motherboards
  • Built with major OEM DRAM from Samsung, Micron or Hynix for enterprise reliability

Compatible Lenovo ThinkSystem Upgrade

This NEMIX RAM module delivers 16GB of DDR4 3200 ECC registered memory built for Lenovo ThinkSystem servers. It carries part number 4X77A85855 and runs at 1.2V with CL22 latency. The 2Rx8 organisation and 288-pin RDIMM form factor match the platform’s qualified configuration.

Suited For Intel-Based ThinkSystem Servers

Administrators expanding memory in compatible Intel-powered ThinkSystem platforms will find this module validated for those workloads. It is not intended for consumer desktops, laptops or non-ECC workstations that require unbuffered DIMMs. Builders needing higher densities or different ranks should verify the system’s qualified vendor list before purchasing.

Registered ECC RDIMM With 2Rx8 Organisation

The single decisive specification is the registered ECC RDIMM layout with 2Rx8 rank structure. Only systems that explicitly support this registered topology and rank configuration will POST and operate correctly. Confirm the server’s memory qualification document lists this exact organisation before ordering.

How it compares

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

Price $110.99
Cheaper than about 66% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $6.94 per GB
Cheaper than about 58% 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 DDR4 3200 MHz ECC RDIMM Registered Server Memory
Part numberMR25600-628K1
Total capacity16 GB
Product type288-Pin DDR4 RDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL22
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank2Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsLenovo
In the box
Included items16 GB (1 × 16 GB) DDR4 3200 MHz PC4-25600 2Rx8 1.2 V CL22 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Does the 288-pin DDR4 RDIMM fit a standard server DIMM slot?

Yes, the module uses the 288-pin DDR4 RDIMM form factor that matches standard registered DIMM slots in compatible Lenovo ThinkSystem servers.

What is the correct order for installing this 2Rx8 registered module alongside existing memory?

Follow the server's population rules: fill the lowest-numbered channel slots first and keep identical rank and speed modules together per channel.

Will the ECC registered design require any firmware updates or battery-backed maintenance over time?

No ongoing firmware or battery maintenance is needed; the module operates at 1.20 V with on-die ECC and registered buffering for the life of the server.

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