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Four green DDR5 RDIMM sticks with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM MR44800-744K4 512GB (4x128GB) DDR5 5600 CL46 1.1V ECC RDIMM memory upgrade

SKU CH-HY2Z-D4PDT

A 512 GB DDR5 ECC registered server memory kit of four 128 GB modules at 5600 MHz with CL46 latency and 1.1 V operation for Lenovo ThinkSystem SR780a V3

  • Capacity512GB (4 x 128GB)
  • SpeedDDR5 5600 (PC5 44800)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 512 GB total capacity across four 128 GB modules
  • DDR5 5600 speed for high-throughput server workloads
  • ECC registered design protects data integrity under load
  • 1 V operation reduces power draw in dense configurations
  • Validated for Lenovo ThinkSystem SR780a V3 rack servers

Lenovo SR780a V3 512GB kit

This 512GB kit contains four 128GB DDR5 5600 registered ECC RDIMMs built for the Lenovo ThinkSystem SR780a V3 rack server. The modules run at 1.10V with CL46 latency and use a 4Rx4 organisation across 288 pins. They are supplied new and validated for that specific platform.

Enterprise buyers needing maximum capacity per slot

IT teams expanding memory in a Lenovo ThinkSystem SR780a V3 will match the qualified part number directly. Workstations, consumer boards or servers that require unbuffered DIMMs, lower densities or different pin-outs cannot use this registered ECC kit.

Sustained load behaviour

Registered buffering and on-die ECC maintain signal integrity and data correctness during continuous multi-threaded workloads. The 1.10V operating voltage keeps power draw steady across all four modules when the server runs at full population for extended periods.

Highlights

  • 512 GB total capacity across four 128 GB modules
  • DDR5 5600 speed for high-throughput server workloads
  • ECC registered design protects data integrity under load
  • 1 V operation reduces power draw in dense configurations
  • Validated for Lenovo ThinkSystem SR780a V3 rack servers

Specifications

BrandNEMIX RAM
SeriesLenovo Server/Workstation Compatible Series Memory
ModelLenovo DDR5 5600MHZ ECC RDIMM Registered Server Memory
Part NumberMR44800-744K4
Capacity512GB (4 x 128GB)
SpeedDDR5 5600 (PC5 44800)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemLenovo
CAS LatencyCL46
Heat SpreaderNo
Type288-Pin DDR5 RDIMM
Rank4Rx4
FeaturesDDR5 ECC Registered RDIMM Server Motherboard Compatible
Package Content512GB (4X128GB) DDR5 5600MHZ PC5-44800 4Rx4 1.1V CL46 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does the Lenovo ThinkSystem SR780a V3 need any specific BIOS setting to recognise the 512 GB DDR5 5600 kit?

The modules are validated for the SR780a V3 and operate at the standard 1.1 V DDR5 voltage, so the server BIOS will detect the 4 x 128 GB configuration automatically on first boot.

Will the 4Rx4 registered ECC DIMMs work in the same channels as existing 2Rx4 RDIMMs in my SR780a V3?

Lenovo's memory population rules allow mixing 4Rx4 and 2Rx4 RDIMMs within a channel as long as the total rank count per channel does not exceed the platform limit; consult the server's memory configuration guide for the exact slot order.

How can I confirm the kit is running at DDR5 5600 with CL46 after installation?

Check the system BIOS or UEFI memory information screen — it will show each DIMM at 5600 MT/s, CAS latency 46, 1.1 V and ECC registered status for all four modules.

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