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Two green DDR5 RDIMM modules with gold contacts and black chips, no heat spreader

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 5600 ECC RDIMM memory upgrade

SKU CH-6HSY-PTGSM

256 GB DDR5 5600 ECC registered server memory kit with two 128 GB modules at CL46 and 1.1 V for Lenovo ThinkSystem SR685a V3

  • Capacity256GB (2 x 128GB)
  • SpeedDDR5 5600 (PC5 44800)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 256 GB total capacity with two 128 GB modules
  • DDR5 5600 speed rated at PC5-44800 bandwidth
  • ECC registered design detects and corrects data errors
  • 1 V operation reduces server power draw
  • Validated for Lenovo ThinkSystem SR685a V3 rack servers

Lenovo ThinkSystem SR685a V3 DDR5 upgrade

This 256GB kit contains two 128GB registered DIMMs built for the Lenovo ThinkSystem SR685a V3 rack server. ECC and registered operation provide the error correction and signal buffering that enterprise workloads demand.

288-pin RDIMM installation in qualified slots

The modules plug directly into the server’s DDR5 RDIMM slots without adapters or risers. Registered signalling reduces electrical load on the memory controller, freeing electrical headroom for dense population across all channels.

5600 MT/s CL46 at 1.10V with 4Rx4 density

Each DIMM runs at PC5-44800 speed with CAS latency 46, delivering 256GB total capacity for virtualisation, databases and in-memory analytics. The 4Rx4 organisation maximises rank density, so further expansion depends on remaining DIMM slots and the platform’s maximum supported memory.

Highlights

  • 256 GB total capacity with two 128 GB modules
  • DDR5 5600 speed rated at PC5-44800 bandwidth
  • ECC registered design detects and corrects data errors
  • 1 V operation reduces server power draw
  • Validated for Lenovo ThinkSystem SR685a V3 rack servers

Specifications

BrandNEMIX RAM
SeriesLenovo Server/Workstation Compatible Series Memory
ModelLenovo DDR5 5600MHZ ECC RDIMM Registered Server Memory
Part NumberMR44800-744K2
Capacity256GB (2 x 128GB)
SpeedDDR5 5600 (PC5 44800)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemLenovo
CAS LatencyCL46
Heat SpreaderNo
Type288-Pin DDR5 RDIMM
Rank4Rx4
FeaturesDDR5 ECC Registered RDIMM Server Motherboard Compatible
Package Content256GB (2X128GB) DDR5 5600MHZ PC5-44800 4Rx4 1.1V CL46 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does the CL46 latency become a bottleneck during sustained heavy workloads on the SR685a V3?

CL46 is the rated CAS latency at DDR5 5600 speed; under sustained load the registered ECC design and 1.1 V operation maintain stability within that timing envelope.

What are the thermal and acoustic characteristics when both 128 GB modules run continuously in a rack server?

The modules have no heat spreader and operate at 1.10 V; they rely on the SR685a V3 chassis airflow for cooling and produce no audible noise themselves.

Which Lenovo server generation must already be installed for this 288-pin RDIMM kit to function?

This kit is validated for the Lenovo ThinkSystem SR685a V3 rack server; the system must be present to accept the 288-pin DDR5 RDIMM form factor.

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