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Two green DDR5 RDIMM modules with black chips no heat spreader

NEMIX RAM

NEMIX RAM 128GB (2x64GB) DDR5 4800 ECC RDIMM for Cisco UCS C220 M7

SKU CH-FB53-FNJXW

128 GB of DDR5 4800 ECC registered server memory in a two-module kit validated for the Cisco UCS C220 M7

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB total capacity from two 64 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design protects data integrity
  • 2Rx4 dual-rank organisation optimises density
  • 1 V operation reduces power draw

Cisco UCS C220 M7 Memory Kit

This 128GB kit uses two 64GB DDR5 4800 ECC RDIMM modules built for the Cisco UCS C220 M7 rack server. Registered buffering and on-die ECC protect data integrity in virtualization and database workloads. The dual-rank 2Rx4 organisation fills two slots while leaving room for future expansion.

288-Pin DDR5 RDIMM Build

Modules run at 1.1V with CL40 latency and carry no heat spreader, relying on server chassis airflow for cooling. The standard 288-pin RDIMM form factor locks into the Cisco memory risers without adapters. Major OEM DRAM from Samsung, Micron or Hynix is stress tested under load before shipment.

Upgrade From Smaller DDR5 Configurations

Replaces lower-capacity DDR5 RDIMM kits when the C220 M7 needs more memory channels populated for bandwidth-sensitive applications. The jump is worth it when workloads exceed the current module count or when consolidation demands 128GB per server. Not suited for systems that require unbuffered UDIMMs or non-ECC memory.

How it compares

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

Price $3,516.99
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 $27.48 per GB
Pricier than about 77% 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 numberMR38400-924K2
Total capacity128 GB (2 × 64 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 rank2Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsCisco
In the box
Included items128 GB (2 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does the DDR5 4800 interface cap real throughput at PC5-38400?

Yes, the kit runs at DDR5 4800 which equates to a PC5-38400 peak transfer rate.

What physical slot and form factor must the Cisco UCS C220 M7 provide for these 288-pin RDIMMs?

The server needs standard 288-pin DDR5 RDIMM slots; each module is a 64 GB 2Rx4 registered DIMM without a heat spreader.

What is the correct installation sequence for the 2Rx4 registered modules, and which step is most often missed?

Power down, open the chassis, align each 288-pin module with the keyed slot and press firmly until the ejectors lock; the step most often missed is verifying the 1.10 V setting in BIOS after boot.

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