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Two green 288-pin DDR5 RDIMM modules, no heat spreaders, 256GB kit

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 4800 CL40 288-Pin ECC RDIMM Cisco UCS C240 M7 memory upgrade

SKU CH-KGTP-AG3WW

A 256 GB DDR5 ECC registered server memory kit for Cisco UCS C240 M7 racks

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256 GB total capacity across two 128 GB modules
  • DDR5 4800 speed rated at PC5-38400 for server workloads
  • ECC registered RDIMM design protects data integrity under load
  • 1 V operating voltage reduces power draw per module
  • Validated for Cisco UCS C240 M7 rack server compatibility

Cisco UCS C240 M7 memory kit

This 256GB kit contains two 128GB DDR5 4800 ECC RDIMM modules built for the Cisco UCS C240 M7 rack server. Registered buffering and on-die ECC protect data integrity in mission-critical workloads. The 4Rx4 organisation maximises density per DIMM slot. It is not for systems that require unbuffered UDIMMs or lower-density 2Rx8 modules.

Sustained load behaviour

Modules run at 1.1V with CL40 latency and PC5-38400 bandwidth under continuous server workloads. Samsung, Micron or Hynix DRAM is stress-tested at rated speed before shipping. Registered design reduces electrical load on the memory controller during extended operation. Buyers who need higher frequencies or lower latencies for specialised HPC tuning should look elsewhere.

Installation notes

The 288-pin DDR5 RDIMMs insert vertically into the server's DIMM slots following Cisco's population guide. No heat spreader is fitted, so airflow clearance matches the chassis design. Mis-seating a module or mixing ranks across channels is the most common cause of POST failures. Technicians without access to the Cisco UCS C240 M7 memory configuration guide should not attempt the upgrade.

How it compares

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

Price $7,851.99
Pricier than about 84% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $30.67 per GB
Pricier than about 88% 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 numberMR38400-744K2
Total capacity256 GB (2 × 128 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 items256 GB (2 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How much power does the 1.1 V DDR5 4800 kit draw under sustained load?

Each 128 GB module runs at 1.10 V DDR5 4800; total draw depends on the server's memory controller and workload, not on a fixed module rating.

What must the Cisco UCS C240 M7 already have to accept this 256 GB RDIMM kit?

The chassis needs free 288-pin DDR5 RDIMM slots that support 4Rx4 registered ECC modules at 4800 MT/s.

Will these CL40 4Rx4 modules run alongside different-rank DDR5 RDIMMs already installed?

The server's memory controller sets a common speed and timing; mixed-rank populations are supported if the platform's qualified-vendor list allows them.

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