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A green circuit board with black memory chips and gold edge connectors

NEMIX RAM

NEMIX RAM 128GB DDR5 4800 CL40 1.1V 4Rx4 ECC RDIMM Cisco MR38400-744K1 memory upgrade

SKU CH-061T-EH1WW

128 GB DDR5 4800 registered ECC RDIMM with CL40 latency and 1.1 V operation for Cisco servers

  • Capacity128GB
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 128 GB capacity scales memory-heavy server workloads
  • DDR5 4800 MT/s speed feeds data to multi-core CPUs
  • CL40 latency at 1.10 V balances throughput and power
  • ECC registered design detects and corrects single-bit errors
  • 288-pin 4Rx4 RDIMM fits Cisco UCS MR38400-744K1 slots

Cisco Server Memory Upgrade

This 128GB DDR5 RDIMM is built for Cisco UCS servers that require registered ECC memory. The single-module design adds high-density capacity in one slot, simplifying upgrades for IT teams managing dense virtualization or database workloads.

Sustained Load Behaviour

ECC and registered buffering protect data integrity during continuous operation, while the 4Rx4 organisation spreads accesses across four ranks to keep throughput steady under heavy multi-threaded demand. The module runs at 4800MHz with CL40 latency, delivering predictable bandwidth for long-running server tasks.

Thermals, Noise and Power

Operating at 1.1V, the module draws minimal power and generates little heat without a heat spreader. Passive cooling in a properly ventilated chassis keeps temperatures low, and the lack of moving parts means the upgrade adds no audible noise to the rack environment.

Points forts

  • 128 GB capacity scales memory-heavy server workloads
  • DDR5 4800 MT/s speed feeds data to multi-core CPUs
  • CL40 latency at 1.10 V balances throughput and power
  • ECC registered design detects and corrects single-bit errors
  • 288-pin 4Rx4 RDIMM fits Cisco UCS MR38400-744K1 slots

Caractéristiques

BrandNEMIX RAM
SeriesCisco Server Compatible Series Memory
ModelCisco DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-744K1
Capacity128GB
SpeedDDR5 4800 (PC5 38400)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemCisco
CAS LatencyCL40
Heat SpreaderNo
Type288-Pin DDR5 RDIMM
Rank4Rx4
FeaturesDDR5 ECC Registered RDIMM Server Motherboard Compatible
Package Content128GB (1X128GB) DDR5 4800MHZ PC5-38400 4Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions sur cet article

How much power does this 128GB DDR5 4800 CL40 registered module draw at its rated 1.1V voltage during continuous operation?

The module operates at 1.1V, the standard DDR5 voltage, so power draw scales with the 128GB capacity and 4800 MT/s data rate; exact watts depend on workload and server memory-controller tuning.

What server platform must I already own for this Cisco MR38400-744K1 288-pin RDIMM to be recognised and initialised?

It is validated for Cisco UCS servers that list the MR38400-744K1 part number; the platform must support DDR5 4800 registered ECC memory with 4Rx4 organisation.

Will this 4Rx4 DDR5 4800 CL40 RDIMM operate in the same Cisco UCS chassis alongside existing 2Rx4 or 1Rx4 DDR5 4800 modules?

Yes — Cisco UCS memory controllers support mixed-rank populations at the same speed; the system will run all slots at 4800 MT/s CL40 provided the total rank count per channel stays within the platform limit.

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