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Eight green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 256GB (8x32GB) DDR5 5600 CL46 1.1V ECC RDIMM memory upgrade for Lenovo ThinkSystem SR685a V3

SKU CH-8HC7-3AWBP

Eight registered DDR5 modules deliver 256 GB of ECC memory at 5600 MHz with CL46 latency and 1.1 V operation for the Lenovo ThinkSystem SR685a V3

  • Total capacity256 GB (8 × 32 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL46
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256 GB total capacity scales demanding server workloads
  • DDR5 5600 speed feeds data to CPUs without bottleneck
  • CL46 latency keeps response tight under load
  • ECC registered design corrects errors for mission-critical uptime
  • 1 V operation reduces power draw in dense racks

Capacity and compatibility

This kit provides 256GB of DDR5 memory across eight 32GB modules. It is validated for the Lenovo ThinkSystem SR685a V3 rack server and uses the PC5-44800 5600MHz standard with CL46 latency.

Build and daily handling

Each module is a 288-pin registered ECC RDIMM operating at 1.10V without a heat spreader. The 1Rx4 organisation and major OEM chips from Samsung, Micron or Hynix support stable operation in dense server configurations.

Upgrade scope and fit

The kit replaces lower-capacity or slower DDR5 RDIMM sets in the supported Lenovo platform. The jump is worthwhile when workloads demand the full 256GB registered ECC configuration at the specified 5600MHz speed.

How it compares

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

Price $7,684.99
Pricier than about 84% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (8 × 32 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $30.02 per GB
Pricier than about 86% 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 numberMR44800-314K8
Total capacity256 GB (8 × 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 items256 GB (8 × 32 GB) DDR5 5600 MHz PC5-44800 1Rx4 1.1 V CL46 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

What speed does the DDR5 5600 interface run at in this Lenovo ThinkSystem SR685a V3 kit?

The modules operate at DDR5 5600 (PC5-44800) with a CAS latency of CL46, delivering the rated transfer rate when the server platform enables the standard JEDEC profile.

What physical slot and module dimensions are required to fit the 8x32GB RDIMMs?

Each module is a 288-pin DDR5 RDIMM measuring the standard server DIMM height; the SR685a V3 provides 288-pin DDR5 RDIMM sockets that accept this form factor directly.

How are the 1Rx4 registered ECC modules installed, and which population step is often missed?

Power down the rack server, open the chassis, align each 288-pin RDIMM with the keyed slot, press firmly until the ejector tabs lock, then follow the SR685a V3 memory population guide for the correct channel order per CPU.

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