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Four bare green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 512GB (4×128GB) DDR5 5600 CL46 4Rx4 ECC RDIMM Lenovo SR680a V3 memory upgrade

SKU CH-7RQ7-GTKT8

512 GB DDR5 registered ECC kit with four 128 GB modules at 5600 MT/s and CL46 latency for Lenovo ThinkSystem SR680a V3 servers

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL46
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 512GB total capacity supports heavy virtualization workloads with four 128GB modules
  • DDR5 5600 speed delivers high bandwidth for data-intensive server applications
  • ECC registered design detects and corrects memory errors for mission-critical stability
  • 1V operation reduces power draw across dense memory configurations
  • Validated for Lenovo ThinkSystem SR680a V3 rack server compatibility

Lenovo SR680a V3 512GB kit

This NEMIX RAM kit supplies 512GB of DDR5 memory across four 128GB modules built for the Lenovo ThinkSystem SR680a V3 rack server. Each module is a registered ECC RDIMM that targets data-centre workloads needing high capacity and error correction.

Thermals power and noise

The modules operate at 1.1V without heat spreaders, relying on server chassis airflow for cooling. Registered buffering and ECC add minimal latency overhead while maintaining signal integrity under sustained load.

Build and connectors

Four 288-pin DDR5 RDIMMs populate four slots in a 4Rx4 organisation using major OEM DRAM from Samsung, Micron or Hynix. Installation follows the server manual and the kit is validated for the SR680a V3 platform.

How it compares

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

Price $15,931.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $31.12 per GB
Pricier than about 89% 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 numberMR44800-744K4
Total capacity512 GB (4 × 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 items512 GB (4 × 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 do I install these 288-pin DDR5 RDIMMs into the Lenovo SR680a V3, and what step is often missed?

Power down the server, open the chassis, align each module's notch with the slot key, press firmly until the ejector clips lock, then verify all four 128 GB sticks are recognised in BIOS before closing the cover.

What maintenance or replacement will this 512 GB kit need over its service life?

The modules have no heat spreaders and no moving parts, so no routine maintenance is required; only a failed stick would need replacement under the lifetime warranty.

What limit appears first when the 4Rx4 registered ECC memory runs sustained workloads at 5600 MT/s?

The CAS latency of CL46 at 1.10 V sets the timing boundary; sustained throughput cannot exceed the PC5-44800 rating of the registered DDR5 RDIMMs.

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