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Sixteen green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 256GB (16x16GB) DDR5 4800 ECC RDIMM Lenovo Thinkstation PX

SKU CH-6ZH1-G11VA

A 256 GB registered DDR5 ECC kit of sixteen 16 GB modules running at 4800 MT/s CL40 and 1.1 V, built for Lenovo ThinkStation PX workstations

  • Total capacity256 GB (16 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256 GB capacity across 16 modules for large workloads
  • DDR5 4800 speed with CL40 latency for responsive data access
  • ECC registered design detects and corrects memory errors
  • 1 V operation reduces power draw per module
  • Validated for Lenovo ThinkStation PX workstation compatibility

NEMIX RAM 256GB DDR5 4800 ECC RDIMM Kit

This 256GB kit contains sixteen 16GB DDR5 4800 registered DIMMs with ECC and a CAS latency of CL40. It operates at 1.1V and uses a 288-pin 1Rx8 layout built from major OEM Samsung, Micron or Hynix chips. The modules are validated for Lenovo Thinkstation PX series workstations.

Suited for Thinkstation PX memory expansion

IT teams upgrading a compatible Thinkstation PX to the full 256GB capacity will find this kit matches the required registered ECC specification. Builders needing non-ECC unbuffered memory, lower capacities or different form factors such as SO-DIMM should look elsewhere.

Handles large datasets and virtualisation workloads

The 256GB total capacity provides headroom for memory-intensive applications, multiple virtual machines and large in-memory databases. Workloads exceeding this capacity or requiring faster speeds than DDR5 4800 will need a platform that supports higher-density or higher-frequency modules.

How it compares

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

Price $6,379.99
Pricier than about 82% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (16 × 16 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $24.92 per GB
Pricier than about 69% 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 numberMR38400-618K16
Total capacity256 GB (16 × 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 items256 GB (16 × 16 GB) DDR5 4800 MHz PC5-38400 1Rx8 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Does this 256GB kit of 16 DDR5 4800 CL40 1.10V RDIMMs require a Lenovo Thinkstation PX motherboard to function?

The modules are qualified for Lenovo Thinkstation PX series workstations. They need a DDR5 RDIMM slot and a platform that accepts registered ECC memory at 4800 MT/s and 1.10V.

Can I keep my existing DDR5 4800 ECC RDIMMs installed while adding these 16 new 16GB modules?

Yes, if the Thinkstation PX has free 288-pin DDR5 RDIMM slots. Matching speed, voltage, rank and ECC type avoids down-clocking or training issues.

How can I verify the full 256GB is recognised and running at CL40 after installation?

Boot into the BIOS or OS and check that 256GB appears at 4800 MT/s with CL40 timings and 1Rx8 organisation on all 16 slots.

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