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Sixteen green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 1TB (16x64GB) DDR5 5600 CL46 2Rx4 ECC RDIMM for Lenovo ThinkSystem SR680a V3 memory upgrade

SKU CH-Y26N-G1HHZ

Registered DDR5 server kit delivers 1 TB across sixteen 64 GB ECC modules at 5600 MT/s CL46 for the Lenovo ThinkSystem SR680a V3

  • Total capacity1 TB (16 × 64 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL46
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 1TB total capacity from sixteen 64GB modules
  • DDR5 5600 speed with CL46 latency
  • ECC registered RDIMM for data integrity
  • 2Rx4 dual-rank organisation per module
  • Validated for Lenovo ThinkSystem SR680a V3

1 TB DDR5 ECC RDIMM kit for Lenovo SR680a V3

This 1 TB memory kit contains sixteen 64 GB registered DDR5 modules validated for the Lenovo ThinkSystem SR680a V3 rack server. It targets IT teams scaling virtualisation, in-memory databases or HPC workloads on that platform.

Capacity and headroom

The kit delivers 1 TB total capacity across sixteen dual-rank 2Rx4 modules running at 5600 MT/s with CL46 latency. Registered buffering and ECC protect data integrity under sustained load, while the 1.1 V operating voltage keeps power draw predictable. Workloads exceeding 1 TB per server will require additional DIMM slots or higher-density modules.

Build and connectors

Each module uses a standard 288-pin DDR5 RDIMM form factor without a heat spreader, relying on server chassis airflow for cooling. Major OEM DRAM from Samsung, Micron or Hynix underpins the modules, which are stress-tested before shipment. The registered design adds a clock cycle of latency but enables the large 16-module population supported by the SR680a V3 memory architecture.

How it compares

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

Price $32,908.99
Pricier than about 93% of the 21,161 comparable items (median $397.99).
Total capacity 1 TB (16 × 64 GB)
Higher than about 93% of the 20,941 comparable items (median 32 GB).
Price per GB $32.91 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 numberMR44800-924K16
Total capacity1 TB (16 × 64 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 rank2Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsLenovo
In the box
Included items1 TB (16 × 64 GB) DDR5 5600 MHz PC5-44800 2Rx4 1.1 V CL46 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Will this 5600 CL46 DDR5 kit run reliably in a ThinkSystem SR680a V3 that already has slower DDR5 modules installed?

The kit is validated for the SR680a V3 at 5600 MT/s with CL46 timing. Mixing speeds forces the server to run all DIMMs at the slowest module's rate, so the new 5600 MT/s sticks will down-clock to match the older ones.

How can I confirm the 16 modules are recognised at 5600 MT/s with ECC active after installation?

Check the Lenovo XClarity Provisioning Manager or BIOS memory information page; it should show 1 TB total, 5600 MT/s operating speed, registered ECC status and 2Rx4 organisation for each of the 16 slots.

Does the box contain only the 16 x 64 GB RDIMMs or are any extra items such as heat spreaders or cables included?

The package supplies exactly the 16 x 64 GB DDR5 5600 CL46 2Rx4 1.10 V 288-pin ECC registered DIMMs listed; no heat spreaders, cables or additional accessories are provided.

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