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Four green DDR5 RDIMM modules with gold contacts and black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 128GB (4x32GB) DDR5 4800 CL40 ECC RDIMM Cisco UCS C240 M7 memory upgrade

SKU CH-3ST5-C33YX

128 GB DDR5 ECC registered server memory kit with four 32 GB modules at 4800 MT/s and CL40 latency

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB total capacity from four 32 GB modules
  • DDR5 4800 speed for high-throughput server workloads
  • ECC registered RDIMM protects data integrity under load
  • 1 V operation reduces power draw in dense chassis
  • Validated compatibility with Cisco UCS C240 M7 rack server

Cisco UCS C240 M7 memory kit

This 128GB kit contains four 32GB DDR5 4800 ECC RDIMM modules built for the Cisco UCS C240 M7 rack server. Registered buffering and on-die ECC protect data integrity in multi-socket enterprise workloads. The modules run at 1.1V and use a 288-pin form factor with 1Rx4 organisation.

IT teams scaling Cisco UCS C240 M7 capacity

Administrators who need validated, high-density memory for virtualisation, database or analytics tiers on this platform will find the kit matches the server's qualified vendor list. Environments requiring lower latency timings, non-ECC modules or consumer-form-factor DIMMs should look elsewhere.

Four-slot population at 4800 MT/s

Populating all four slots delivers 128GB of registered ECC capacity at the platform's native 4800 MT/s rate with CL40 latency. Workloads that exceed this capacity or demand higher memory frequencies will require a different server configuration or CPU generation.

How it compares

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

Price $3,669.99
Pricier than about 75% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $28.67 per GB
Pricier than about 81% 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 numberMR38400-314K4
Total capacity128 GB (4 × 32 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 rank1Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsCisco
In the box
Included items128 GB (4 × 32 GB) DDR5 4800 MHz PC5-38400 1Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

My Cisco UCS C240 M7 currently runs 32 GB RDIMMs — will this 128 GB kit replace them or must I add to open slots?

The kit provides four 32 GB RDIMMs for a total of 128 GB; install them in the server's DDR5 slots according to the Cisco population guide for the C240 M7.

Will these DDR5 4800 CL40 modules run at full speed alongside any DDR5 4800 RDIMMs already installed in the server?

Yes, matched DDR5 4800 CL40 1.1 V RDIMMs of the same rank and ECC type will operate together at the rated speed when populated per the platform rules.

After seating the four modules, how can I confirm the server recognises all 128 GB at DDR5 4800 with ECC active?

Check the BIOS memory summary or Cisco IMC inventory — it should show 128 GB total, DDR5 4800 MT/s, ECC enabled and the correct rank configuration.

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