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Four green DDR5 RDIMM sticks in a row

NEMIX RAM

NEMIX RAM 64GB (4x16GB) DDR5 4800 ECC RDIMM Dell PowerEdge R660

SKU CH-Q1MR-5WEBB

A 64 GB kit of four 16 GB DDR5 4800 ECC registered DIMMs built for the Dell PowerEdge R660

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 64 GB kit expands server capacity for demanding workloads
  • Four 16 GB modules populate channels evenly for balanced throughput
  • DDR5 4800 speed with CL40 latency delivers high bandwidth at 1.10 V
  • ECC registered design detects and corrects data errors in flight
  • Validated for Dell PowerEdge R660 rack server compatibility

Dell PowerEdge R660 DDR5 kit

This 64 GB kit contains four 16 GB DDR5 4800 registered ECC modules built for the Dell PowerEdge R660 rack server. Each module runs at 1.10 V with CL40 latency and a 1Rx8 organisation. The RDIMM form factor fits the server's 288-pin DDR5 slots.

DDR5 4800 registered ECC limits

DDR5 4800 registered ECC memory operates at 1.1 V and requires a motherboard that supports registered DIMMs with on-die ECC. The registered buffer adds one clock cycle of latency, and the platform must be qualified for PC5-38400 speeds. Mixing registered and unbuffered modules is not supported.

Verify server memory configuration

Confirm the PowerEdge R660 has four free DDR5 RDIMM slots and that the BIOS is updated to the revision Dell specifies for 4800 MT/s registered ECC modules. Check the system's maximum supported capacity per slot and total population rules before ordering.

How it compares

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

Price $1,817.99
Pricier than about 85% of the 6,523 comparable items (median $188.99).
Total capacity 64 GB (4 × 16 GB)
Higher than about 70% of the 6,064 comparable items (median 32 GB).
Price per GB $28.41 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 numberMR38400-618K4
Total capacity64 GB (4 × 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

Should I buy the 4x16 GB kit or look for a different capacity for my PowerEdge R660?

The kit provides 64 GB total across four 16 GB modules, filling four slots in a balanced 1Rx8 layout that matches the R660 memory architecture.

What does the DDR5 4800 speed rating actually deliver inside the server?

The modules run at 4800 MT/s with CL40 latency at 1.10 V, giving the rated PC5-38400 bandwidth when the R660 memory controller operates at its native DDR5 4800 frequency.

Is the 288-pin RDIMM interface the limiting factor for speed or capacity in this platform?

The 288-pin registered DIMM form factor is the standard DDR5 server interface; the R660 memory controller caps the kit at 4800 MT/s, so the interface itself does not impose a lower limit.

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