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Eight green DDR5 RDIMM sticks in a row

NEMIX RAM

NEMIX RAM 128GB (8x16GB) DDR5 4800 CL40 ECC RDIMM Lenovo PX memory upgrade

SKU CH-3CGC-996JX

Eight 16 GB DDR5 registered ECC modules totalling 128 GB at 4800 MT/s CL40 1.1 V for Lenovo ThinkStation PX workstations

  • Total capacity128 GB (8 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB total capacity from eight 16 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered RDIMM design protects data integrity
  • Low 1.1 V operating voltage reduces power draw
  • CL40 latency tuned for Lenovo ThinkStation PX compatibility

Lenovo ThinkStation PX upgrade kit

This 128GB kit targets Lenovo ThinkStation PX workstations that require registered ECC memory. Eight 16GB modules fill eight slots for maximum supported capacity. The DDR5 4800 specification matches the platform's native memory speed. IT teams use it to expand memory for virtualization, rendering or large dataset workloads.

ECC RDIMM registered design

Error-correcting code detects and corrects single-bit errors to protect data integrity in long-running tasks. Registered buffering reduces electrical load on the memory controller for stable operation at full population. The 1.10V operating voltage aligns with DDR5 standard power. No heat spreaders are included, relying on system airflow.

128GB capacity at DDR5 4800

The 128GB total handles multi-VM environments, in-memory databases and complex simulations without paging. CL40 latency is the standard timing for this speed grade. Eight 1Rx8 ranks populate all channels for optimal bandwidth. Workloads exceeding 128GB or requiring faster than 4800 MT/s need a different platform.

How it compares

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

Price $3,688.99
Pricier than about 75% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (8 × 16 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $28.82 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 numberMR38400-618K8
Total capacity128 GB (8 × 16 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 rank1Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsLenovo
In the box
Included items128 GB (8 × 16 GB) DDR5 4800 MHz PC5-38400 1Rx8 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Will the ECC RDIMM modules need any firmware updates or periodic re-seating over time?

No firmware updates or scheduled re-seating are required; the registered DDR5 modules run at 1.10 V and are validated for continuous operation in Lenovo Thinkstation PX workstations.

What is the first bottleneck when all eight 16 GB sticks run at 4800 MT/s under sustained load?

The CL40 CAS latency and 1Rx8 rank organisation set the latency floor, so memory controller scheduling becomes the limiting factor before bandwidth saturates.

How much heat and power does the 128 GB kit draw when the workstation runs all day?

Each module operates at 1.1 V without a heat spreader; total kit power stays within standard DDR5 RDIMM limits, and airflow from the chassis fans is sufficient for cooling.

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