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Eight green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 512GB (8x64GB) DDR5 5600 CL46 ECC RDIMM Lenovo SR780a V3 memory upgrade

SKU CH-E3VX-FAVA6

Eight 64 GB DDR5 registered ECC RDIMMs running at 5600 MHz with CL46 latency, 1.1 V operation and 288-pin form factor, validated for the Lenovo ThinkSystem SR780a V3 rack server

  • Total capacity512 GB (8 × 64 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL46
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 512GB total capacity scales Lenovo SR780a V3 workloads
  • Eight 64GB modules populate all DDR5 channels
  • ECC RDIMM registered design protects data integrity
  • DDR5 5600 CL46 speed matches platform spec
  • 1V low voltage reduces server power draw

Lenovo SR780a V3 512GB DDR5 kit

This 512GB kit contains eight 64GB DDR5 5600 registered ECC RDIMMs built for the Lenovo ThinkSystem SR780a V3 rack server. It targets administrators who need maximum memory capacity in a validated configuration. Each module runs at PC5-44800 with CL46 latency and 1.10V operation. The kit is new and ready for installation.

Thermals and power at 1.10V

Registered DDR5 modules operate at 1.10V, reducing per-DIMM power draw compared with previous DDR generations. The 4Rx4 organisation spreads load across ranks, helping thermal stability in dense 8-slot populations. No heat spreaders are fitted, so chassis airflow must handle the thermal load. ECC and registered signalling add minimal overhead while protecting data integrity.

Build integration for dense servers

The 288-pin RDIMM form factor matches the SR780a V3 memory slots directly. Eight modules fill the kit, so available slots determine whether the full 512GB can be installed at once. Registered buffering eases electrical load on the memory controller, supporting high-capacity population. Compatibility is limited to the specified Lenovo platform; other systems are not validated.

How it compares

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

Price $15,029.99
Pricier than about 90% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (8 × 64 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $29.36 per GB
Pricier than about 83% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR44800-944K8
Total capacity512 GB (8 × 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 rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsLenovo
In the box
Included items512 GB (8 × 64 GB) DDR5 5600 MHz PC5-44800 4Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

How do I install the 288-pin DDR5 RDIMM modules in the Lenovo ThinkSystem SR780a V3, and which 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 click shut, then confirm all eight 64GB modules are detected in the BIOS before closing the cover.

What maintenance or replacement will the 512GB ECC RDIMM kit need over its service life?

The modules have no moving parts and require no scheduled maintenance; replacement is only necessary if a module fails, which the ECC function will flag through corrected error counts in the system logs.

What limit appears first when the 4Rx4 DDR5 5600 kit runs sustained workloads?

The 1.10V operating voltage and CL46 latency combine with the 4Rx4 organisation to make thermal throttling the first bottleneck under continuous heavy load, so adequate airflow through the server chassis is essential.

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