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Green printed circuit board with black memory chips in a single 288-pin DDR5 RDIMM module

NEMIX RAM

NEMIX RAM 128GB DDR5 4800 CL40 4Rx4 1.1V ECC RDIMM Cisco UCS C240 M7 memory upgrade

SKU CH-EDR0-JQX4F

128 GB DDR5 4800 registered ECC module with 4Rx4 organisation and CL40 latency for Cisco UCS C240 M7 servers

  • Total capacity128 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB capacity supports large-scale virtualisation and in-memory databases
  • DDR5 4800 speed delivers high throughput for demanding server workloads
  • ECC registered design detects and corrects data errors to protect mission-critical applications
  • 1 V operation reduces power draw and heat in dense rack environments
  • Validated for Cisco UCS C240 M7 ensures drop-in compatibility and stability

Cisco UCS C240 M7 DDR5 RDIMM

This NEMIX RAM module provides 128GB of DDR5 4800 registered ECC memory in a single 288-pin DIMM. It is built for the Cisco UCS C240 M7 rack server and uses a 4Rx4 organisation with CL40 latency at 1.10V. The part number MR38400-744K1 identifies the exact configuration.

Check server DIMM slots and population rules

Verify that the UCS C240 M7 has a free 288-pin DDR5 slot and consult the server documentation for approved population order. Registered ECC modules must match the platform’s qualified-vendor list so confirm this part number against Cisco’s compatibility matrix before installation. Mixed-rank or mixed-voltage configurations may prevent the system from posting.

Registered ECC build with major OEM chips

The module uses Samsung, Micron or Hynix components assembled without a heat spreader for standard server airflow. Registered signalling reduces electrical load on the memory controller while ECC corrects single-bit errors in mission-critical workloads. The 1.10V operation aligns with DDR5 baseline voltage for efficient power draw in dense configurations.

How it compares

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

Price $3,533.99
Pricier than about 75% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $27.61 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 numberMR38400-744K1
Total capacity128 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 items128 GB (1 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Does the 128GB DDR5 4800 module arrive as a single stick or must I order multiple kits?

The package contains one 128GB 288-pin DDR5 RDIMM; no extra modules or accessories are included.

When should I choose the 4Rx4 CL40 1.1V variant over other DDR5 capacities?

Select this 128GB 4Rx4 registered ECC module when your Cisco UCS C240 M7 requires maximum density per slot at the standard 4800 MT/s server speed.

What does the 4800 MT/s rating deliver once the RDIMM is installed in the Cisco UCS C240 M7?

The module runs at the platform's native DDR5 4800 speed with CL40 latency, providing 128GB of registered ECC capacity per DIMM slot.

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