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Green circuit board DDR4 RDIMM module 128GB 288-pin no heat spreader

NEMIX RAM

NEMIX RAM 128GB DDR4 3200 ECC RDIMM 4Rx4 CL22 1.2V 288-Pin Lenovo 4ZC7A15125 memory upgrade

SKU CH-JACW-5K9R0

A 128 GB DDR4 3200 ECC registered DIMM for Lenovo ThinkSystem servers with AMD processors

  • Total capacity128 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL22
  • Buffer typeRegistered
  • Rated voltage1.2 V
  • 128 GB capacity expands server memory headroom
  • DDR4 3200 speed delivers high bandwidth for demanding workloads
  • ECC registered design protects data integrity in mission-critical systems
  • CL22 latency at 1.2 V balances responsiveness with efficiency
  • Validated for Lenovo ThinkSystem 4ZC7A15125 AMD-based servers

128 GB DDR4 3200 ECC RDIMM

This NEMIX RAM module delivers 128 GB of DDR4 3200 memory in a single 288-pin registered DIMM. It operates at 1.2 V with CL22 latency and uses a 4Rx4 organisation built from major OEM DRAM. The stick is validated for Lenovo ThinkSystem servers using AMD processors and carries part number MR25600-744K1.

Suited for Lenovo AMD servers only

Administrators expanding Lenovo ThinkSystem platforms that require DDR4 3200 registered ECC memory can install this module directly. Builders working with Intel-based servers, consumer motherboards, or systems that need unbuffered DIMMs or a different speed grade should look elsewhere.

4Rx4 rank configuration decides fit

The 4Rx4 organisation determines whether the server memory controller can address the full 128 GB capacity. Systems limited to dual-rank or single-rank modules will not recognise this DIMM, so verify the platform rank support before ordering.

How it compares

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

Price $831.99
Pricier than about 58% 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 $6.50 per GB
Cheaper than about 61% 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 numberMR25600-744K1
Total capacity128 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 rank4Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsLenovo
In the box
Included items128 GB (1 × 128 GB) DDR4 3200 MHz PC4-25600 4Rx4 1.2 V CL22 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Does my Lenovo ThinkSystem server need to run AMD processors for this 4ZC7A15125-compatible 128 GB DDR4 3200 ECC RDIMM to work?

The module is validated for AMD-processor-based Lenovo ThinkSystem servers carrying part number 4ZC7A15125; it will not function in Intel-based models.

Can I mix this 4Rx4 1.2 V CL22 registered DIMM with existing 2Rx4 or 2Rx8 DDR4 3200 modules in the same channel?

Mixing different rank architectures (4Rx4 with 2Rx4/2Rx8) in the same channel is not supported; populate identical modules per channel for stable operation.

After installation, how do I confirm the single 128 GB 288-pin RDIMM is running at PC4-25600 with ECC active?

Enter the server BIOS or UEFI and verify the memory speed reads 3200 MT/s, capacity shows 128 GB, and ECC status reports enabled or active.

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