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Two green 288-pin DDR5 RDIMM modules with black chips, no heat spreader

NEMIX RAM

NEMIX RAM 128GB (2x64GB) DDR5 4800 CL40 2Rx4 ECC RDIMM Dell PowerEdge XR7620 memory upgrade

SKU CH-SWHX-FD10A

A 128GB dual-rank DDR5 4800 CL40 registered ECC kit for Dell PowerEdge XR7620 servers

  • Capacity128GB (2 x 64GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 128GB total capacity from two 64GB modules
  • DDR5 4800 speed with PC5-38400 bandwidth
  • ECC registered design protects data integrity
  • CL40 latency at 1.1V operating voltage
  • 288-pin 2Rx4 RDIMM built for Dell PowerEdge XR7620

Dell PowerEdge XR7620 memory kit

This 128 GB kit contains two 64 GB DDR5 registered DIMMs built for the Dell PowerEdge XR7620 rack server. ECC and registered buffering protect data integrity in mission-critical workloads. The modules run at 4800 MT/s with CL40 latency at 1.1 V. No heat spreaders are fitted.

288-pin RDIMM form factor

Each module uses the standard 288-pin DDR5 RDIMM connector, so installation follows the server's documented memory population rules. Registered signalling reduces electrical load on the memory controller, allowing the full two-module population. The 2Rx4 organisation matches the platform's supported rank configuration.

DDR5 4800 registered ECC limits

The DDR5 4800 interface caps transfer rate at 38 400 MB/s per module, and CL40 latency is fixed by the JEDEC base specification. Registered ECC operation adds one cycle of command buffering, which cannot be disabled. Systems that require unbuffered or non-ECC memory cannot use this kit.

Highlights

  • 128GB total capacity from two 64GB modules
  • DDR5 4800 speed with PC5-38400 bandwidth
  • ECC registered design protects data integrity
  • CL40 latency at 1.1V operating voltage
  • 288-pin 2Rx4 RDIMM built for Dell PowerEdge XR7620

Specifications

BrandNEMIX RAM
SeriesDell Server/Workstation Compatible Series Memory
ModelDell DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-924K2
Capacity128GB (2 x 64GB)
SpeedDDR5 4800 (PC5 38400)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemDell
CAS LatencyCL40
Heat SpreaderNo
Type288-Pin DDR5 RDIMM
Rank2Rx4
FeaturesDDR5 ECC Registered RDIMM Server Motherboard Compatible
Package Content128GB (2X64GB) DDR5 4800MHZ PC5-38400 2Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

What speed does the DDR5 4800 interface run at in this kit?

The modules operate at DDR5 4800 (PC5-38400) with a CAS latency of CL40.

What physical slot and form factor are required for these 288-pin RDIMMs?

They fit a standard 288-pin DDR5 RDIMM slot; no heat spreader is present, so clearance is minimal.

How do I install the two 64 GB modules in a Dell PowerEdge XR7620, and what step is often missed?

Power down, open the chassis, align each module with the keyed slot and press firmly until the ejector clips lock; the step often missed is verifying the memory configuration in the BIOS after boot.

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