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Eight green DDR5 RDIMM sticks in anti-static tray

NEMIX RAM

NEMIX RAM 1TB (8x128GB) DDR5 5600 CL46 4Rx4 1.1V ECC RDIMM Lenovo SR685a V3

SKU CH-HCZM-60SJ1

Eight 128 GB DDR5 registered ECC modules deliver 1 TB at 5600 MT/s with CL46 latency for the Lenovo ThinkSystem SR685a V3

  • Total capacity1 TB (8 × 128 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL46
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 1TB capacity with eight 128GB modules for dense server deployments
  • DDR5 5600 speed delivers high bandwidth for demanding workloads
  • ECC registered design protects data integrity in mission-critical systems
  • 1V operation reduces power draw across large memory configurations
  • Validated for Lenovo ThinkSystem SR685a V3 rack servers

Capacity and Compatibility

This 1 TB kit contains eight 128 GB DDR5 5600 ECC RDIMM modules validated for the Lenovo ThinkSystem SR685a V3 rack server. It targets IT teams expanding memory capacity in that specific platform for virtualization, databases or high-performance computing workloads.

Build Integration

Each module uses a 288-pin DDR5 RDIMM form factor with registered buffering and 4Rx4 organisation, requiring a motherboard that supports registered ECC memory at 1.1 V. The kit occupies eight DIMM slots and frees no additional slots; no heat spreader is included, so airflow across the modules must be provided by the server chassis.

Sustained Operation

Rated at CL46 latency and PC5-44800 bandwidth, the modules are stress-tested under load to maintain stability during continuous enterprise workloads. ECC correction and registered signalling preserve data integrity over long runtimes, while the 1.1 V operating voltage supports efficient power draw in dense configurations.

How it compares

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

Price $34,276.99
Pricier than about 93% of the 21,161 comparable items (median $397.99).
Total capacity 1 TB (8 × 128 GB)
Higher than about 93% of the 20,941 comparable items (median 32 GB).
Price per GB $34.28 per GB
Pricier than about 90% 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 5600 MHz ECC RDIMM Registered Server Memory
Part numberMR44800-744K8
Total capacity1 TB (8 × 128 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 5600 (PC5 44800)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL46
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsLenovo
In the box
Included items1 TB (8 × 128 GB) DDR5 5600 MHz PC5-44800 4Rx4 1.1 V CL46 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How does CL46 latency affect throughput during sustained heavy workloads?

CL46 is the CAS latency timing; lower values reduce access delay, but sustained throughput also depends on the DDR5 5600 data rate and the server memory controller.

What thermal or power behaviour should be expected when all eight modules run continuously?

Each module operates at 1.10 V with no heat spreader; registered DDR5 RDIMMs typically run cooler than high-voltage alternatives, but actual temperature depends on chassis airflow.

Which server must already be in the rack for this 1 TB kit to function?

The kit is validated for the Lenovo ThinkSystem SR685a V3 rack server; it requires that exact platform to operate.

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