We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green rectangular DDR4 RDIMM module with black chips, no heat spreader, 288 gold contacts

NEMIX RAM

NEMIX RAM 128GB DDR4 2933MHz ECC RDIMM 4Rx4 CL21 1.2V 288-pin memory upgrade

SKU CH-G1XD-565MW

128GB DDR4 2933MHz ECC registered DIMM with CL21 latency and 1.2V operation for compatible Lenovo servers

  • Total capacity128 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL21
  • Buffer typeRegistered
  • Rated voltage1.2 V
  • 128GB capacity supports heavy virtualization workloads
  • DDR4 2933MHz speed handles data-intensive server tasks
  • ECC registered design protects data integrity under load
  • 2V operation reduces power draw in dense configurations
  • Validated for Lenovo ThinkSystem 4ZC7A15138 compatibility

Lenovo ThinkSystem 4ZC7A15138 compatible DDR4 RDIMM

This 128GB DDR4 2933MHz ECC registered module is built for Intel-based Lenovo ThinkSystem servers that require the 4ZC7A15138 part number. It targets administrators upgrading memory in compatible enterprise platforms.

Simple DIMM installation with manual reference

The module inserts into a standard 288-pin DDR4 RDIMM slot and typically takes minutes to fit. Always consult the system owner's manual for detailed instructions and supported population rules before installing.

128GB single-module capacity at 1.2V

One stick delivers 128GB at CL21 latency with 4Rx4 organisation, suited for dense virtualisation or large in-memory workloads. Headroom ends when the platform's maximum supported memory per socket or total DIMM count is reached.

How it compares

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

Price $660.99
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 $5.16 per GB
Cheaper than about 75% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

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

How do I verify the 128GB DDR4 2933MHz ECC RDIMM is running at CL21 1.2V after installation?

Enter the server BIOS or UEFI and confirm the memory speed reads 2933 MT/s, CAS latency shows CL21, voltage reads 1.2V, and ECC status reports active for the 128GB module.

What ships with the MR23400-744K1 kit and do I need extra parts?

The box contains one 128GB 288-pin DDR4 2933MHz ECC registered RDIMM; no cables, brackets, or additional components are included or required for installation.

Which capacity and rank should I choose for a Lenovo ThinkSystem using part 4ZC7A15138?

Select the 128GB 4Rx4 DDR4 2933MHz ECC RDIMM (MR23400-744K1) — it matches the specified Lenovo part number and is validated for Intel-based ThinkSystem servers.

More in Model-Specific Memory Upgrades

Similar items