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Four green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 128GB (4x32GB) DDR5 4800 CL40 1.1V 2Rx8 ECC RDIMM Lenovo Thinkstation PX memory upgrade

SKU CH-HHYX-01V4B

Adds 128 GB of DDR5 4800 ECC registered memory in a four-module kit for Lenovo Thinkstation PX workstations

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB total capacity from four 32 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design protects data integrity under load
  • 1 V operation keeps power draw low
  • 288-pin RDIMM form factor fits Lenovo ThinkStation PX

Lenovo ThinkStation PX ECC RDIMM kit

This 128GB kit contains four 32GB DDR5 registered DIMMs built for Lenovo ThinkStation PX workstations. ECC and registered operation protect data integrity in mission-critical workloads. The modules run at 4800 MT/s with a CAS latency of 40 at 1.10V.

Four-module population for maximum capacity

Populating all four slots with 2Rx8 modules delivers the full 128GB without mixing densities. The registered buffer reduces electrical load on the memory controller, allowing stable operation at the rated speed. No heat spreaders are fitted, so airflow from the workstation chassis cools the DRAM directly.

Low-voltage DDR5 efficiency at stock settings

At 1.10V the kit draws minimal power while maintaining 4800 MT/s throughput. Registered DIMMs typically run cooler than unbuffered equivalents under sustained load, helping system fans stay quiet. The absence of heat spreaders keeps the profile low for dense workstation configurations.

How it compares

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

Price $3,508.99
Pricier than about 75% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $27.41 per GB
Pricier than about 76% 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 numberMR38400-328K4
Total capacity128 GB (4 × 32 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 rank2Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsLenovo
In the box
Included items128 GB (4 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does the DDR5 4800 CL40 timing limit sustained throughput on the Lenovo Thinkstation PX?

At DDR5 4800 with CL40 latency the modules deliver the rated PC5-38400 bandwidth; sustained throughput is governed by the workstation's memory controller and cooling, not by the kit itself.

How much heat and power do the four 32 GB RDIMMs produce when the system runs all day?

Each module operates at 1.1 V without a heat spreader; total power draw and thermals depend on the Thinkstation PX chassis airflow and workload intensity.

What must the workstation already have to accept this 288-pin ECC RDIMM kit?

The Lenovo Thinkstation PX must support DDR5 registered ECC RDIMMs with 2Rx8 organisation and 1.1 V operation across four DIMM slots.

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