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Two green DDR5 server memory modules with gold contacts and black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 256GB (2×128GB) DDR5 4800 CL40 ECC RDIMM Cisco UCS C220 M7

SKU CH-YVES-TR7HW

A 256 GB DDR5 registered ECC memory kit with two 128 GB modules running at 4800 MT/s and CL40 latency for Cisco UCS C220 M7 servers

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256 GB total capacity from two 128 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design detects and corrects data errors
  • Low 1.1 V operating voltage reduces power draw
  • Validated for Cisco UCS C220 M7 server compatibility

Cisco UCS C220 M7 256GB DDR5 Kit

This 256GB kit contains two 128GB DDR5 4800 ECC registered DIMMs built for the Cisco UCS C220 M7 rack server. Each module runs at 1.1V with CL40 latency and a 4Rx4 organisation. The registered design adds a buffer that stabilises heavy memory loads in enterprise environments.

Upgrading from smaller RDIMM sets

Replacing lower-capacity registered DIMMs with this 2×128GB kit doubles or quadruples the memory pool available to virtualisation hosts and database engines. The jump is worth it when workloads exceed the current installed capacity and the server’s memory slots support 128GB per slot at 4800 MT/s.

Tool-less DIMM installation

The 288-pin DDR5 modules seat vertically in the server’s memory channels and lock with the ejector levers; no screws or cables are required. Common issues include mixing registered and unbuffered DIMMs, populating slots in the wrong channel order, or failing to update the system firmware before the first boot.

How it compares

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

Price $7,647.99
Pricier than about 84% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $29.87 per GB
Pricier than about 85% 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 numberMR38400-744K2
Total capacity256 GB (2 × 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 items256 GB (2 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does the 288-pin DDR5 RDIMM form factor fit the Cisco UCS C220 M7 memory slots?

Yes, the 288-pin DDR5 RDIMM modules match the Cisco UCS C220 M7 DIMM slots exactly.

What BIOS setting or installation step is often missed when adding these 4Rx4 registered ECC modules?

The server BIOS must be updated to the latest revision before installing the 4Rx4 registered ECC DIMMs so the memory controller recognises the rank configuration.

When will the Samsung, Micron or Hynix DRAM chips on these 128 GB modules need replacement under normal server load?

The DRAM chips are rated for continuous enterprise operation and do not have a scheduled replacement interval; they are covered by a lifetime replacement warranty.

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