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Green rectangular DDR5 memory module with gold edge connectors and black chips, no heat spreader

NEMIX RAM

NEMIX RAM 64GB DDR5 4800 CL40 2Rx4 1.1V ECC RDIMM Cisco UCS MRX64G2RE1 memory upgrade

SKU CH-QMYW-JGSXR

A 64 GB DDR5 registered ECC DIMM running at 4800 MT/s with CL40 latency and 1.1 V operation for Cisco UCS servers

  • Total capacity64 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 64 GB capacity supports heavy virtualization workloads
  • DDR5 4800 speed delivers high memory bandwidth
  • CL40 latency ensures responsive server operation
  • ECC registered design protects data integrity
  • 1 V operation reduces power consumption

Cisco UCS DDR5 RDIMM upgrade

This 64GB DDR5 module is built for Cisco UCS servers that require registered ECC memory. It targets administrators who need to expand capacity in validated platforms without mixing unqualified DIMMs. The single-stick design lets you populate one slot at a time.

288-pin registered ECC integration

The 288-pin RDIMM plugs directly into compatible Cisco DDR5 server boards and operates at 1.10V. Registered signalling reduces electrical load on the memory controller, freeing headroom for larger configurations. ECC protection corrects single-bit errors to maintain data integrity under sustained workloads.

64GB capacity at 4800 MT/s

One module delivers 64GB of PC5-38400 bandwidth with CL40 latency and a 2Rx4 organisation. It comfortably handles virtualisation, database and container workloads that benefit from high density. Systems needing more total memory must add further qualified DIMMs to reach the platform limit.

How it compares

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

Price $1,532.99
Pricier than about 65% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $23.95 per GB
Pricier than about 69% 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 numberMR38400-924K1
Total capacity64 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 items64 GB (1 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Does the CL40 latency limit throughput when the module runs at 4800 MT/s continuously?

The module operates at DDR5 4800 with CL40 timing; latency is fixed at that specification and does not change under sustained load.

How much heat does the 1.1 V registered DIMM produce during all-day server workloads?

The RDIMM runs at 1.10 V without a heat spreader; registered buffering reduces electrical load on the memory controller, keeping thermals within standard server limits.

Which Cisco UCS platforms accept this 288-pin 2Rx4 ECC RDIMM without additional parts?

The module is built to match Cisco part MRX64G2RE1 and fits any UCS server qualified for 64 GB DDR5 4800 registered ECC memory.

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