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Sixteen green DDR5 RDIMM sticks in a row

NEMIX RAM

NEMIX RAM 256GB (16x16GB) DDR5 4800 ECC RDIMM Dell PowerEdge R660xs server RAM

SKU CH-Y051-12Z46

256GB DDR5 4800 ECC registered server memory kit with 16 modules of 16GB each at CL40 and 1.1V for Dell PowerEdge R660xs

  • Total capacity256 GB (16 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Capacity 256GB (16 x 16GB)

Rank 1Rx8

  • 256GB total capacity across 16 modules
  • DDR5 4800 speed for high-throughput workloads
  • ECC registered design protects data integrity
  • 1V operation reduces power draw
  • Qualified for Dell PowerEdge R660xs server

256GB DDR5 4800 ECC RDIMM kit

This NEMIX RAM kit provides 256GB of DDR5 server memory across sixteen 16GB registered DIMMs. It runs at 4800MT/s with CL40 latency at 1.10V and includes on-die ECC for data integrity. The modules are validated for Dell PowerEdge R660xs rack servers.

Suited for full-population upgrades.

IT teams populating every slot in a PowerEdge R660xs to reach the platform's maximum supported capacity will use this kit. Buyers who need fewer than sixteen modules or a lower total capacity should select a smaller kit instead.

16x16GB registered DDR5 at 4800MT/s

The decisive specification is the sixteen-module, 1Rx8 registered DDR5 configuration operating at 4800MT/s. This exact population matches the R660xs memory architecture for full-channel operation.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $7,417.99
Pricier than about 91% of the 6,523 comparable items (median $188.99).
Total capacity 256 GB (16 × 16 GB)
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $28.98 per GB
Pricier than about 90% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineDell Series Server Memory
Model nameDell Compatible DDR5 ECC Registered RDIMM
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
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.1 V

Other versions of this model

5 more in the same range

Questions about this item

How many 288-pin DDR5 RDIMM slots are required to install the full 256GB kit?

The kit contains 16 modules of 16GB each, so 16 available DDR5 RDIMM slots are needed to install the full 256GB capacity.

What is the correct order for populating the 16 registered ECC modules in the Dell PowerEdge R660xs?

Follow the Dell PowerEdge R660xs owner's manual for the specific slot population sequence; registered ECC RDIMMs must be installed in the prescribed order per CPU channel for proper operation.

Will the 1.10V DDR5 RDIMMs require any firmware updates or ongoing maintenance after installation?

No scheduled maintenance is required; ensure the server BIOS is current before installation for compatibility, but the modules themselves need no further firmware updates or replacement cycles.

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