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Four green DDR5 RDIMM modules, black chips, no heat spreaders

NEMIX RAM

NEMIX RAM 64GB (4x16GB) DDR5 4800 CL40 ECC RDIMM Dell PowerEdge XR7620 memory upgrade

SKU CH-X4T1-10654

64 GB kit of four 16 GB DDR5 4800 CL40 ECC registered DIMMs for Dell PowerEdge XR7620 servers

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • ECC protection ensures data integrity for critical workloads
  • 4800 MT/s DDR5 speed supports demanding server applications
  • Registered design stabilises signal quality across 64 GB capacity
  • 1 V operation reduces power draw in Dell PowerEdge XR7620
  • Four 16 GB modules populate 288-pin slots for easy upgrade

64GB DDR5 4800 ECC RDIMM Kit

This 64GB kit contains four 16GB registered DIMMs built for the Dell PowerEdge XR7620 rack server. Each module runs at 4800 MT/s with a CAS latency of 40 at 1.1V. Error-correcting code and registered buffering protect data integrity in continuous enterprise workloads.

Suited for IT teams expanding XR7620 capacity

The modules are validated for that specific platform, so administrators can install them without compatibility guesswork. Buyers who need non-ECC memory, unbuffered DIMMs, a different speed grade, or a larger single-module density should look at something else.

288-pin DDR5 RDIMM form factor

The 288-pin registered DDR5 interface is the single specification that determines whether the kit fits the server's memory slots. Confirm the XR7620 requires registered ECC RDIMMs before ordering.

How it compares

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

Price $1,779.99
Pricier than about 67% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (4 × 16 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $27.81 per GB
Pricier than about 78% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineDell Server/Workstation Compatible Series Memory
Model nameDell DDR5 4800 MHz ECC RDIMM Registered Server Memory
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
Heat spreaderNo
Memory rank1Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsDell
In the box
Included items64 GB (4 × 16 GB) DDR5 4800 MHz PC5-38400 1Rx8 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How do I install the 288-pin DDR5 RDIMM modules into the Dell PowerEdge XR7620, and what step is often missed?

Power down the server, open the chassis, align each module's notch with the slot key, press firmly until both latches click, then verify all four 16GB modules are recognised in BIOS before closing the case.

What maintenance or replacement will the ECC registered memory need over time?

The modules have no moving parts or heat spreaders; only periodic dust removal from the slots is required, and ECC corrects single-bit errors so individual DIMMs rarely need replacement unless a multi-bit failure occurs.

What limit appears first when the kit runs sustained workloads at 4800 MT/s?

The CL40 latency at 1.1V sets the throughput ceiling; sustained heavy traffic will hit timing and voltage constraints before thermal throttling becomes an issue on these bare RDIMMs.

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