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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

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL46
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 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.

How it compares

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

Price $16,527.99
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 $32.28 per GB
Pricier than about 90% 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

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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