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Sixteen green DDR5 RDIMM modules with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 2TB (16x128GB) DDR5 4800 CL40 ECC RDIMM Lenovo PX memory upgrade

SKU CH-H94G-7YETY

16-module 2 TB DDR5 kit runs at 4800 MT/s with CL40 latency and ECC registered stability for Lenovo ThinkStation PX workstations

  • Total capacity2 TB (16 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 2 TB capacity with sixteen 128 GB modules
  • DDR5 4800 speed rated at PC5-38400
  • ECC registered design protects data integrity
  • CL40 latency at 1.1 V operating voltage
  • 288-pin 4Rx4 layout built for Lenovo ThinkStation PX

Lenovo Thinkstation PX memory kit

This 2 TB kit contains sixteen 128 GB DDR5 RDIMM modules built for Lenovo Thinkstation PX workstations. Registered ECC design with 4Rx4 organisation provides error correction and signal integrity for mission-critical workloads. CL40 latency at 4800 MT/s delivers stable throughput for memory-intensive applications.

Upgrade from smaller RDIMM sets

Replacing partial populations or lower-capacity registered DIMMs with this full 16-module kit maximises the platform's memory ceiling in a single step. The jump is worth it when workloads exceed current capacity and require the full 2 TB addressable space for large datasets or virtualisation density.

Check slot count and population rules

Verify the workstation has sixteen available DDR5 RDIMM slots and confirm the required population order in the service manual. Ensure the system BIOS supports 4Rx4 registered modules at 1.1 V before installation.

How it compares

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

Price $57,215.99
Pricier than about 97% of the 21,161 comparable items (median $397.99).
Total capacity 2 TB (16 × 128 GB)
Higher than about 99% of the 20,941 comparable items (median 32 GB).
Price per GB $28.61 per GB
Pricier than about 81% 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 numberMR38400-744K16
Total capacity2 TB (16 × 128 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 rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsLenovo
In the box
Included items2 TB (16 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Does the 288-pin DDR5 RDIMM form factor fit the ThinkStation PX memory slots?

Yes, the 288-pin DDR5 RDIMM modules match the ThinkStation PX DIMM slots exactly.

What is the correct sequence for populating the 16 modules across the processor channels?

Follow the Lenovo ThinkStation PX service manual to populate all 16 slots in the prescribed channel order for 4Rx4 registered DIMMs.

When should the 16 registered ECC modules be reseated or replaced?

Reseat modules if the system logs corrected ECC errors; replace any module that reports uncorrectable errors or fails memory diagnostics.

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