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Sixteen green DDR5 RDIMM modules in static bags

NEMIX RAM

NEMIX RAM 256GB (16x16GB) DDR5 4800 CL40 1Rx8 ECC RDIMM memory upgrade

SKU CH-KDFX-EEQ23

256 GB DDR5 server kit with sixteen 16 GB ECC registered RDIMMs at 4800 MT/s CL40 for Cisco UCS C240 M7

  • Total capacity256 GB (16 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256 GB total capacity with 16 modules of 16 GB each
  • DDR5 4800 speed rated at PC5-38400 for server workloads
  • ECC registered RDIMM design detects and corrects memory errors
  • 1Rx8 single-rank organisation optimises signal integrity on Cisco UCS C240 M7
  • Low 1.10 V operation reduces power draw in dense configurations

Cisco UCS C240 M7 compatible kit

This 256GB memory kit contains sixteen 16GB DDR5 4800 modules built for the Cisco UCS C240 M7 rack server. IT teams handling virtualisation, databases or analytics workloads can populate all slots with a single validated part number.

Registered ECC with major OEM chips

Each module uses Samsung Micron or Hynix components in a 1Rx8 registered layout with on-die ECC. The registered buffer reduces electrical load on the server memory controller while error correction protects data integrity under sustained load.

DDR5 4800 CL40 at 1.10V

The kit runs at PC5-38400 speed with CAS latency 40 and the standard 1.10V DDR5 voltage. Servers requiring a different data rate or lower latency will not match this specification.

How it compares

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

Price $6,795.99
Pricier than about 83% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (16 × 16 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $26.55 per GB
Pricier than about 73% 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 numberMR38400-618K16
Total capacity256 GB (16 × 16 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 rank1Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsCisco
In the box
Included items256 GB (16 × 16 GB) DDR5 4800 MHz PC5-38400 1Rx8 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Will the 16 individual 16GB modules need any maintenance or replacement over time?

The modules are solid-state with no moving parts and include on-die ECC for error correction; they are designed to run for the server's service life without scheduled maintenance.

What limit appears first when the kit runs at 4800 MT/s continuously in a Cisco UCS C240 M7?

The CL40 latency at 4800 MT/s sets the timing boundary; sustained throughput is capped by the DDR5-4800 JEDEC data rate and the registered buffer on each DIMM.

How much heat and power does the 256GB kit produce at 1.1V during all-day operation?

Each 16GB RDIMM draws 1.1V with no heat spreader, so total power scales with 16 ranks; typical server airflow handles the resulting heat without extra cooling.

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