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Eight green DDR5 RDIMM sticks, bare chips, no heat spreaders

NEMIX RAM

NEMIX RAM MR44800-744K8 1TB (8×128GB) DDR5 5600 CL46 1.1V 4Rx4 ECC RDIMM memory upgrade

SKU CH-3PTF-XE2FN

Eight 128 GB DDR5 RDIMMs running at 5600 MT/s with CL46 latency, ECC and registered buffering for the Lenovo ThinkSystem SR680a V3

  • Total capacity1 TB (8 × 128 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL46
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 1 TB capacity with eight 128 GB modules for high-density server workloads
  • DDR5 5600 speed rated at PC5-44800 for fast data throughput
  • ECC registered RDIMM design detects and corrects errors to protect data integrity
  • Low 1.1 V operating voltage reduces power draw in dense rack environments
  • Validated for Lenovo ThinkSystem SR680a V3 for guaranteed compatibility

Server-grade DDR5 kit for Lenovo ThinkSystem

This 1 TB kit contains eight 128 GB registered DIMMs built for the Lenovo ThinkSystem SR680a V3 rack server. ECC and registered buffering protect data integrity in mission-critical workloads. The modules run at DDR5 5600 with CL46 latency at 1.10 V.

Simple DIMM installation with population rules

Each 288-pin RDIMM seats in the server’s standard DDR5 slots without tools. The 4Rx4 rank layout requires the correct population sequence shown in the system manual; mis-ordered modules will prevent boot. No heat spreaders are fitted, so airflow must follow the chassis design.

Sustained throughput at rated speed and voltage

Under continuous load the kit maintains DDR5 5600 (PC5-44800) at 1.10 V with CL46 timings. Registered buffering and on-die ECC keep error rates low during extended compute or virtualization sessions. Stability is validated by vendor stress testing before shipment.

How it compares

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

Price $35,595.99
Pricier than about 94% of the 21,161 comparable items (median $397.99).
Total capacity 1 TB (8 × 128 GB)
Higher than about 93% of the 20,941 comparable items (median 32 GB).
Price per GB $35.60 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 numberMR44800-744K8
Total capacity1 TB (8 × 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 items1 TB (8 × 128 GB) DDR5 5600 MHz PC5-44800 4Rx4 1.1 V CL46 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How do I confirm the 1TB kit runs at 5600 MT/s with CL46 after installing it in the ThinkSystem SR680a V3?

Enter the server BIOS or UEFI and verify the memory speed shows 5600 MT/s and the CAS latency reads CL46; the registered ECC modules initialise automatically on supported Lenovo platforms.

What exactly ships in the MR44800-744K8 box and do I need any extra parts?

The box contains eight 128GB DDR5 288-pin RDIMM modules for a total of 1TB; no additional cables, brackets or heat spreaders are required for installation.

Should I choose the 4Rx4 1.10V version or a different rank and voltage for this server?

Select the 4Rx4 1.10V kit listed here; it matches the ThinkSystem SR680a V3 qualified configuration and other rank or voltage options are not validated for this model.

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