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A green circuit board with gold edge connectors and black memory chips

NEMIX RAM

NEMIX RAM 128GB DDR4 2933 CL21 4Rx4 RDIMM memory upgrade

SKU CH-3GGM-ZSRN5

128GB DDR4 2933MHz ECC registered RDIMM server memory module for Lenovo ThinkSystem compatibility

  • Total capacity128 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL21
  • Buffer typeRegistered
  • Rated voltage1.2 V
  • 128 GB capacity enables large virtualised workloads
  • DDR4 2933 speed delivers high throughput for server tasks
  • ECC registered design protects data integrity under load
  • 2 V operation reduces power draw in dense configs
  • Tested compatible with Lenovo ThinkSystem 4X77A12187 servers

128GB DDR4 2933 ECC RDIMM Server Module

This NEMIX RAM module provides 128GB of DDR4 2933 registered ECC memory in a single 288-pin RDIMM. It operates at 1.2V with a CL21 latency and 4Rx4 organisation. The unit is designed for compatibility with Lenovo ThinkSystem servers using Intel processors.

Suited for Lenovo ThinkSystem capacity upgrades

This module fits administrators expanding memory in compatible Lenovo ThinkSystem servers that require registered ECC RDIMMs. It is not suitable for systems that only accept unbuffered UDIMMs, non-ECC memory, lower-density modules, or DDR5 slots.

128GB single-module density decides fit

The 128GB capacity in one 4Rx4 RDIMM determines whether the server board and memory controller support this density and rank configuration. Verify the platform qualified vendor list for this exact part number before purchase.

How it compares

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

Price $670.99
Pricier than about 55% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $5.24 per GB
Cheaper than about 73% 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 2933 MHz ECC RDIMM Registered Server Memory
Part numberMR23400-744K1
Total capacity128 GB
Product type288-Pin DDR4 RDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL21
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsLenovo
In the box
Included items128 GB (1 × 128 GB) DDR4 2933 MHz PC4-23400 4Rx4 1.2 V CL21 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Does this 128GB DDR4 2933 RDIMM require a Lenovo ThinkSystem server with an Intel processor to operate?

Yes, the module is validated for Lenovo ThinkSystem servers using Intel processors and matches part number 4X77A12187.

Can I mix this 4Rx4 registered ECC module with existing 2Rx4 or 1Rx4 DDR4 RDIMMs in the same server?

Mixing ranks is possible if the platform supports it, but population rules vary by model; consult the server memory guide for approved configurations.

After installation, how can I confirm the 128GB module is running at 2933 MT/s with ECC active?

Check the BIOS memory information or use a tool such as dmidecode to verify speed, 4Rx4 organization and ECC status.

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