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Eight green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 512GB (8x64GB) DDR5 4800 CL40 2Rx4 ECC RDIMM Dell PowerEdge XE9640 memory upgrade

SKU CH-RE7H-4EN72

Eight 64 GB DDR5 4800 CL40 ECC registered DIMMs totalling 512 GB for Dell PowerEdge XE9640 servers

  • Capacity512GB (8 x 64GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 512 GB total capacity scales memory-intensive workloads
  • DDR5 4800 speed transfers data at PC5-38400 bandwidth
  • ECC registered design corrects errors for mission-critical stability
  • 2Rx4 288-pin RDIMM modules install in Dell PowerEdge XE9640
  • 1 V operation reduces power draw per module

System-specific memory kit for Dell PowerEdge XE9640

This 512 GB kit contains eight 64 GB DDR5 RDIMMs rated at 4800 MT/s with CL40 latency. Each module is registered, ECC-enabled and organised as 2Rx4 for server workloads. The kit targets IT teams upgrading compatible Dell rack servers.

Compatibility check for Dell PowerEdge XE9640

Verify that your XE9640 supports 512 GB of registered ECC DDR5 at 1.1 V and that all eight DIMM slots are available. Confirm the system BIOS recognises 2Rx4 modules and that the memory configuration follows Dell population rules.

Build quality and daily implications

Modules use major OEM DRAM from Samsung, Micron or Hynix and are stress-tested under load before shipment. The 288-pin RDIMM form factor fits standard DDR5 server slots without a heat spreader, leaving clearance for dense rack airflow. Registered buffering and ECC protect data integrity in continuous operation.

Highlights

  • 512 GB total capacity scales memory-intensive workloads
  • DDR5 4800 speed transfers data at PC5-38400 bandwidth
  • ECC registered design corrects errors for mission-critical stability
  • 2Rx4 288-pin RDIMM modules install in Dell PowerEdge XE9640
  • 1 V operation reduces power draw per module

Specifications

BrandNEMIX RAM
SeriesDell Server/Workstation Compatible Series Memory
ModelDell DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-924K8
Capacity512GB (8 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 Content512GB (8X64GB) DDR5 4800MHZ PC5-38400 2Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does the kit ship with eight 64 GB modules, or do I need to buy any sticks separately?

The kit contains eight 64 GB DDR5 RDIMMs, giving a total of 512 GB; no additional modules are required.

Should I pick the 2Rx4 CL40 version or a different rank and latency for the PowerEdge XE9640?

This 2Rx4 CL40 kit matches the Dell-qualified specification for the XE9640, so it is the correct choice for that server.

What does the 4800 MT/s rating mean once the memory is installed in the XE9640?

The modules run at 4800 MT/s (PC5-38400) with CL40 latency at 1.1 V, delivering the rated bandwidth and error-correction the platform expects.

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