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Six green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 768GB (6x128GB) DDR5 4800 CL40 1.1V ECC RDIMM Cisco UCS C220 M7

SKU CH-F2CM-MDVAD

768GB DDR5 ECC registered server memory kit in six 128GB modules running at 4800MHz CL40 and 1.1V for Cisco UCS C220 M7

  • Total capacity768 GB (6 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Massive 768GB capacity from six 128GB modules
  • DDR5 4800 speed with PC5-38400 bandwidth
  • ECC registered design protects data integrity
  • Low 1.1V voltage reduces power draw
  • Validated for Cisco UCS C220 M7 server

Cisco UCS C220 M7 DDR5 Kit

This 768 GB kit contains six 128 GB DDR5 ECC registered DIMMs built for the Cisco UCS C220 M7 rack server. Each module runs at 4800 MT/s with CL40 latency at 1.1 V. The 4Rx4 organisation and 288-pin RDIMM form factor match the platform's memory architecture. IT teams use this kit to maximise capacity in a single chassis.

Registered ECC at 4800 MT/s

The registered ECC design and 4800 MT/s data rate are the decisive specifications for this server. Error correction protects data integrity under sustained load while the register reduces electrical loading on the memory bus. The 4Rx4 density enables 128 GB per module so the six-slot kit reaches 768 GB without exceeding the platform's rank limits. Systems that require unbuffered or non-ECC memory cannot use these modules.

Six-module installation

Installing six identical DIMMs follows the server's documented population order; the keyed 288-pin connector prevents misalignment. Common issues arise when slots are filled out of sequence or when firmware is not updated before the upgrade, which can prevent the system from recognising the full capacity. Verify the memory configuration in BIOS after installation to confirm all 768 GB are active.

How it compares

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

Price $24,423.99
Pricier than about 92% of the 21,161 comparable items (median $397.99).
Total capacity 768 GB (6 × 128 GB)
Higher than about 92% of the 20,941 comparable items (median 32 GB).
Price per GB $31.80 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 lineCisco Server Compatible Series Memory
Model nameCisco DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-744K6
Total capacity768 GB (6 × 128 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsCisco
In the box
Included items768 GB (6 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

What does the 768 GB total capacity mean for a Cisco UCS C220 M7 in daily use?

Six 128 GB modules fill six DIMM slots and give the server 768 GB of DDR5 ECC registered memory for large datasets and virtualisation workloads.

How does the DDR5 4800 PC5-38400 rating limit real-world throughput?

The modules run at 4800 MT/s with CL40 latency; the memory controller in the Cisco UCS C220 M7 determines the actual sustained bandwidth.

What physical requirements must the chassis meet to install these 288-pin RDIMMs?

Each module is a standard 288-pin DDR5 RDIMM without a heat spreader, operating at 1.1 V, and fits the Cisco UCS C220 M7 DIMM slots directly.

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