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Sixteen green DDR5 RDIMM modules in a tray, bare black PCBs with silver contacts, no heat spreaders

NEMIX RAM

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

SKU CH-G387-G1BEF

16-module 256GB DDR5 4800 ECC RDIMM kit at 1.10V CL40 for Dell PowerEdge R660 servers

  • Total capacity256 GB (16 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 256GB kit with 16 modules of 16GB each
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered RDIMM for data integrity in servers
  • 10V operation at CL40 latency timing
  • Compatible with Dell PowerEdge R660 rack server

Server capacity kit

This 256GB kit contains sixteen 16GB DDR5 RDIMM modules built for Dell PowerEdge R660 rack servers. Registered ECC design targets enterprise workloads that demand data integrity and high density.

Thermal and power profile

Modules operate at 1.10V with no heat spreader, relying on server chassis airflow for cooling. Registered buffering reduces electrical load on the memory controller during sustained operation.

Compatibility scope

The kit is validated for the specified Dell platform; other servers or workstations may require different register timing or voltage. Buyers needing consumer DIMM form factors or non-ECC memory should look elsewhere.

How it compares

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

Price $6,805.99
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 $26.59 per GB
Pricier than about 88% 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

Questions about this item

How do I install the 16 RDIMM modules in the Dell PowerEdge R660 and what step is often missed?

Populate all 16 slots following the R660 memory population guide; the step often missed is verifying the BIOS recognises every 1Rx8 module at 4800 MT/s before closing the chassis.

What maintenance or replacement will the 256GB kit need over its service life?

No routine maintenance is required; if a module fails the lifetime replacement warranty covers a direct swap of the faulty 16GB RDIMM.

What limit appears first when the 16x16GB DDR5 4800 kit runs sustained workloads?

The CL40 latency at 1.10V sets the throughput ceiling; sustained loads will hit the 4800 MT/s data-rate limit before thermal throttling occurs.

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