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Sixteen green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 2TB (16×128GB) DDR5 5600 CL46 4Rx4 ECC RDIMM memory upgrade for Lenovo ThinkSystem SR780a V3

SKU CH-8EJQ-HPM50

16×128 GB DDR5 5600 CL46 ECC RDIMM kit adding 2 TB registered memory to Lenovo ThinkSystem SR780a V3

  • Total capacity2 TB (16 × 128 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL46
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 2 TB total capacity from 16 modules of 128 GB each
  • DDR5 5600 speed rated at PC5-44800 for high throughput
  • ECC registered RDIMM design protects data integrity in servers
  • CL46 latency at 1.1 V balances timing and power
  • 288-pin 4Rx4 form factor built for Lenovo ThinkSystem SR780a V3

Lenovo SR780a V3 Memory Kit

This 2TB kit provides 16 registered DDR5 modules at 128GB each for the ThinkSystem SR780a V3 server. It is built for IT teams that need maximum ECC capacity in a single qualified configuration.

Sustained Load Behaviour

Registered buffering and on-die ECC keep data integrity stable during continuous enterprise workloads. The 1.10V operating voltage helps maintain thermal consistency across all 16 modules under prolonged utilisation.

DDR5 5600 Interface Limits

The PC5-44800 standard sets the peak transfer rate at 5600 MT/s with CL46 latency. Four-rank 4Rx4 organisation increases density per slot but constrains maximum operating frequency compared to lower-rank alternatives.

How it compares

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

Price $64,996.99
Pricier than about 98% of the 21,161 comparable items (median $397.99).
Total capacity 2 TB (16 × 128 GB)
Higher than about 99% of the 20,941 comparable items (median 32 GB).
Price per GB $32.50 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 numberMR44800-744K16
Total capacity2 TB (16 × 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 items2 TB (16 × 128 GB) DDR5 5600 MHz PC5-44800 4Rx4 1.1 V CL46 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

How much power does the 1.1V DDR5 kit draw when the SR780a V3 runs continuously?

Each module operates at 1.1V; total draw depends on how many of the 16 slots the server populates and the workload.

What must the server already have to accept this 16×128GB RDIMM kit?

A Lenovo ThinkSystem SR780a V3 with 16 free 288-pin DDR5 RDIMM slots and a BIOS that supports 4Rx4 registered ECC modules.

Will these 5600 CL46 modules run with slower DDR5 DIMMs I keep in the same chassis?

The server will clock all installed DDR5 to the lowest common speed and latency; mixing ranks or speeds is not recommended by Lenovo.

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