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Sixteen green DDR5 RDIMM modules in a clear tray

NEMIX RAM

NEMIX RAM 512GB (16x32GB) DDR5 5600 ECC RDIMM memory upgrade

SKU CH-SJSP-4KH1R

A 512 GB registered DDR5 kit of sixteen 32 GB modules running at 5600 MT/s with ECC and CL46 latency for Lenovo ThinkSystem SR680a V3 servers

  • Total capacity512 GB (16 × 32 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL46
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 512 GB total capacity from sixteen 32 GB modules
  • DDR5 5600 speed rated at PC5-44800
  • ECC registered RDIMM protects data integrity
  • 1 V operation reduces power draw
  • Validated for Lenovo ThinkSystem SR680a V3

Server memory kit

This 512GB kit contains sixteen 32GB DDR5 5600 ECC registered DIMMs built for the Lenovo ThinkSystem SR680a V3 rack server. Each module runs at 1.1V with a CL46 latency and uses a 1Rx4 organisation. The registered design and error-correcting code target enterprise workloads that require data integrity across all populated slots.

Sustained operation

Registered buffering reduces electrical load on the memory controller when all sixteen slots are filled, helping the platform maintain the rated 5600 MT/s transfer rate under continuous demand. ECC circuitry detects and corrects single-bit errors in real time, preventing silent data corruption during long compute runs. The 1.1V operating voltage keeps power draw predictable across the full kit.

Build and connectors

Modules use the standard 288-pin DDR5 RDIMM form factor without heat spreaders, relying on server chassis airflow for cooling. Major-brand Samsung, Micron or Hynix DRAM components are assembled to meet Lenovo qualification requirements. The kit is intended exclusively for the validated platform; other systems will not accept the registered ECC pinout or firmware profile.

How it compares

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

Price $14,157.99
Pricier than about 90% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (16 × 32 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $27.65 per GB
Pricier than about 77% 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 numberMR44800-314K16
Total capacity512 GB (16 × 32 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 rank1Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsLenovo
In the box
Included items512 GB (16 × 32 GB) DDR5 5600 MHz PC5-44800 1Rx4 1.1 V CL46 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

How much power does the 1.10 V DDR5 5600 kit draw when the Lenovo ThinkSystem SR680a V3 runs all day?

Each 32 GB module operates at 1.10 V, so the 16-module kit runs at the standard DDR5 voltage; actual watts depend on the server workload and memory controller.

What must the Lenovo ThinkSystem SR680a V3 already have for this 512 GB kit to work?

The server needs 16 free 288-pin DDR5 RDIMM slots and a BIOS that supports 1Rx4 ECC registered modules at 5600 MT/s.

Will the 1Rx4 CL46 registered modules run alongside existing 2Rx8 DDR5 RDIMMs in the same server?

Mixing ranks is possible if the platform's memory controller allows it; the SR680a V3 manual specifies which rank combinations are supported per channel.

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