We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Two green DDR5 RDIMM modules with gold contacts and black chips, no heat spreader

NEMIX RAM

NEMIX RAM 128GB (2x64GB) DDR5 5600 ECC RDIMM CL46 4Rx4 1.1V Lenovo SR780a V3 memory upgrade

SKU CH-04JC-8K92V

128 GB DDR5 ECC RDIMM kit with two 64 GB modules at 5600 MT/s CL46 for Lenovo SR780a V3 servers

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL46
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • ECC protection prevents data corruption with registered DDR5 modules
  • 128GB kit (2 x 64GB) expands Lenovo SR780a V3 memory capacity
  • DDR5 5600 speed delivers high bandwidth for server workloads
  • 1V operation reduces power draw per module
  • 288-pin RDIMM form factor fits compatible Lenovo rack server slots

128GB DDR5 ECC RDIMM Kit for Lenovo SR780a V3

This 128GB kit contains two 64GB DDR5 5600 registered DIMMs with ECC and a CAS latency of 46. It is built for the Lenovo ThinkSystem SR780a V3 rack server and runs at 1.1V. The 4Rx4 organisation suits high-density memory configurations in enterprise environments.

Verify DDR5 RDIMM Slots and 5600 Support

Confirm that your SR780a V3 has free 288-pin DDR5 RDIMM slots and that the platform firmware enables 5600 MT/s operation with 4Rx4 modules. Registered ECC memory must be paired with a compatible server chipset; mixing with unbuffered or non-ECC DIMMs will prevent boot.

Fits SR780a V3 Memory Channels

The two modules populate a matched pair of channels, leaving remaining slots open for future expansion up to the platform limit. Registered buffering reduces electrical load on the memory controller, freeing headroom for additional ranks. No heat spreaders are fitted, so ensure chassis airflow meets the server specification.

How it compares

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

Price $3,677.99
Pricier than about 75% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (2 × 64 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $28.73 per GB
Pricier than about 81% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR44800-944K2
Total capacity128 GB (2 × 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 items128 GB (2 × 64 GB) DDR5 5600 MHz PC5-44800 4Rx4 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

Does the 128GB kit include two 64GB DDR5 5600 ECC RDIMM modules or do I need to buy them separately?

The kit ships with two 64GB DDR5 5600 ECC RDIMM modules totalling 128GB, so no extra modules are required.

Should I choose the 4Rx4 CL46 version or a different rank and latency for the Lenovo SR780a V3?

This kit is built as 4Rx4 CL46 at 1.1V, matching the server’s qualified configuration for registered ECC memory.

What does the 5600MHz PC5-44800 rating mean when the modules are installed in the SR780a V3?

The modules will run at DDR5 5600 transfer rate with CL46 latency, delivering the rated PC5-44800 bandwidth in the supported server slots.

More in Model-Specific Memory Upgrades

Similar items