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Eight green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 1TB (8x128GB) DDR5 4800 PC5-38400 4Rx4 CL40 288-Pin ECC RDIMM Lenovo Thinkstation PX

SKU CH-FYJP-9RN14

Eight 128 GB DDR5 RDIMMs deliver 1 TB of registered ECC memory at 4800 MT/s CL40 for Lenovo ThinkStation PX workstations

  • Total capacity1 TB (8 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 1TB total capacity with eight 128GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered RDIMM for data integrity
  • CL40 CAS latency at 1.10V operating voltage
  • 288-pin 4Rx4 configuration built for Lenovo Thinkstation PX

Lenovo Thinkstation PX DDR5 kit

This 1 TB kit contains eight 128 GB DDR5 ECC registered DIMMs built for the Lenovo Thinkstation PX workstation. The modules run at 4800 MT/s with CL40 latency and operate at 1.1 V. Registered buffering and error correction protect data integrity in professional workloads.

Upgrade from smaller RDIMM sets

Replacing a partial population with this full 1 TB configuration removes the need to mix ranks and speeds across channels. The jump is worth it when applications demand the maximum supported memory capacity for large datasets or virtualisation hosts.

Capacity and headroom

Eight 4Rx4 modules deliver 1 TB of addressable memory for memory-intensive simulations, rendering and database caching. Headroom ends when the workstation’s memory controller reaches its supported rank-per-channel limit or the chassis runs out of 288-pin slots.

How it compares

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

Price $28,277.99
Pricier than about 93% of the 21,161 comparable items (median $397.99).
Total capacity 1 TB (8 × 128 GB)
Higher than about 93% of the 20,941 comparable items (median 32 GB).
Price per GB $28.28 per GB
Pricier than about 79% 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 numberMR38400-744K8
Total capacity1 TB (8 × 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 items1 TB (8 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Will the 288-pin DDR5 RDIMM modules fit the Lenovo ThinkStation PX DIMM slots?

Yes, the kit uses standard 288-pin DDR5 RDIMM form factor that matches the workstation's memory slots.

Do I need to populate all eight slots in a specific order for the 4Rx4 registered modules to initialise?

Follow the ThinkStation PX manual for population sequence; registered 4Rx4 DIMMs typically require filling slots per channel starting with the first slot from the CPU.

When should I consider replacing the 1.1 V DDR5 modules if ECC corrections increase over time?

Monitor system logs for rising correctable error counts; persistent uncorrectable errors or failed POST indicate a module needs replacement.

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