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NEMIX RAM

NEMIX RAM 128GB (2x64GB) DDR5 5600 CL46 ECC RDIMM Lenovo SR685a V3

SKU CH-XHND-Y4TD4

128 GB DDR5-5600 ECC registered dual-rank kit built for Lenovo ThinkSystem SR685a V3 servers

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL46
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128GB total capacity from two 64GB modules
  • DDR5 5600 speed rated at PC5-44800 bandwidth
  • ECC registered RDIMM for server data integrity
  • CL46 latency at 1.1V operating voltage
  • 288-pin 2Rx4 design built for Lenovo SR685a V3

Lenovo SR685a V3 DDR5 Kit

This 128GB kit delivers 2x64GB DDR5 5600 ECC RDIMM modules built for the Lenovo ThinkSystem SR685a V3 rack server. Registered design and on-die ECC protect data integrity in mission-critical workloads. The dual-rank 2Rx4 organisation suits high-density memory configurations. Modules operate at 1.1V without heat spreaders.

DDR5 5600 CL46 Registered Limits

Speed locks to 5600 MT/s with CL46 latency when the platform memory controller initialises the DIMMs. Registered buffering adds one cycle of address-command delay, so real-world throughput depends on the server BIOS memory map. PC5-44800 rating defines the peak transfer ceiling; sustained bandwidth varies with channel population and rank count. Mixed-rank or mixed-voltage populations are not supported by this kit.

288-Pin RDIMM Build and Daily Use

Bare green PCB modules expose the 288-pin edge connector for direct slot insertion; no heat spreader means clearance is never an issue in dense chassis. Major OEM Samsung, Micron or Hynix DRAM chips are stress-tested under load before shipment. 1.10V operation keeps power draw predictable in fully populated servers. Buyers needing non-ECC UDIMMs or faster JEDEC speeds must choose a different product.

How it compares

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

Price $3,683.99
Pricier than about 75% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (2 × 64 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $28.78 per GB
Pricier than about 81% 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 numberMR44800-924K2
Total capacity128 GB (2 × 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 items128 GB (2 × 64 GB) DDR5 5600 MHz PC5-44800 2Rx4 1.1 V CL46 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Should I choose the 128GB kit or look for a different capacity for my Lenovo SR685a V3?

This kit provides 128GB total across two 64GB modules, matching the 2Rx4 rank structure validated for the ThinkSystem SR685a V3.

What does the 5600MHz speed deliver once installed in the server?

The modules run at DDR5 5600 (PC5-44800) with CL46 latency at 1.1V, giving the rated throughput and timing the platform expects for registered ECC operation.

How does the 288-pin RDIMM interface affect compatibility and performance limits?

The 288-pin DDR5 RDIMM form factor fits registered DIMM slots; the registered buffer and ECC function let the memory controller address the 2Rx4 organisation at the specified 5600MHz data rate.

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