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Two green DDR5 RDIMM modules without heat spreaders, 288-pin, 256GB total

NEMIX RAM

NEMIX RAM MR38400-744K2 256GB (2x128GB) DDR5 4800 CL40 ECC RDIMM for Lenovo Thinkstation PX memory upgrade

SKU CH-76ZQ-JB2B8

DDR5 ECC registered RDIMM kit adding 256 GB across two 128 GB modules at 4800 MT/s CL40 for Lenovo ThinkStation PX workstations

  • Capacity256GB (2 x 128GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 256 GB capacity with two 128 GB modules
  • DDR5 4800 MT/s speed rated at PC5-38400
  • ECC registered design protects data integrity
  • 1 V operation reduces power draw
  • Validated for Lenovo Thinkstation PX workstations

System-specific DDR5 kit for Lenovo Thinkstation PX

This 256GB kit comprises two 128GB registered ECC RDIMMs built for the Lenovo Thinkstation PX workstation platform. It runs at DDR5 4800 with a CAS latency of CL40 and operates at 1.1V. The modules use a 288-pin 4Rx4 layout with chips sourced from major OEM suppliers.

Sustained-load behaviour with registered ECC

Registered buffering and on-die ECC maintain data integrity during continuous multi-threaded workloads such as rendering, simulation or virtualization hosting. The 4Rx4 organization allows high density per channel while the 1.10V operating voltage keeps power draw predictable under prolonged stress. Modules are stress-tested under load before shipping.

Thermals and power in normal operation

Bare modules without heat spreaders rely on chassis airflow for cooling; the low 1.1V DDR5 voltage limits thermal output during typical workstation duties. Registered design adds minimal latency overhead while reducing electrical load on the memory controller. Acoustic profile is silent as no active cooling is present on the DIMMs themselves.

Points forts

  • 256 GB capacity with two 128 GB modules
  • DDR5 4800 MT/s speed rated at PC5-38400
  • ECC registered design protects data integrity
  • 1 V operation reduces power draw
  • Validated for Lenovo Thinkstation PX workstations

Caractéristiques

BrandNEMIX RAM
SeriesLenovo Server/Workstation Compatible Series Memory
ModelLenovo DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-744K2
Capacity256GB (2 x 128GB)
SpeedDDR5 4800 (PC5 38400)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemLenovo
CAS LatencyCL40
Heat SpreaderNo
Type288-Pin DDR5 RDIMM
Rank4Rx4
FeaturesDDR5 ECC Registered RDIMM Server Motherboard Compatible
Package Content256GB (2X128GB) DDR5 4800MHZ PC5-38400 4Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions sur cet article

How much power does the 1.10V 4Rx4 kit draw when the workstation runs all day?

Each module operates at 1.10 volts; total system power depends on the ThinkStation PX memory controller and workload.

What must the workstation already provide for these 288-pin DDR5 RDIMMs to function?

The ThinkStation PX must support DDR5 4800 registered ECC memory with 4Rx4 organisation and 288-pin slots.

Will the CL40 4Rx4 registered modules run alongside any older DDR5 DIMMs I might keep in the same machine?

Mixing ranks, speeds or latencies can prevent the platform from training; Lenovo recommends identical modules per channel for stability.

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