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Green circuit board DDR5 memory module with black chips and gold edge contacts

NEMIX RAM

NEMIX RAM 128GB DDR5 4800 CL40 4Rx4 ECC RDIMM HPE P63345-B21 memory upgrade

SKU CH-D3R6-AXBHD

A 128GB DDR5 4800 CL40 4Rx4 ECC registered DIMM built for HPE P63345-B21 servers

  • Capacity128GB
  • SpeedDDR5 4800 (PC5 38400)
  • ECCYes
  • Buffered/RegisteredRegistered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 128 GB DDR5 4800 MHz capacity for large-scale workloads
  • CL40 latency at 1.1 V for efficient server operation
  • 4Rx4 registered ECC design protects data integrity
  • 288-pin RDIMM form factor fits HPE P63345-B21 systems
  • Built with Samsung, Micron or Hynix chips for reliability

HPE DDR5 4800 ECC RDIMM Server Memory

This 128GB registered DDR5 module operates at 4800MHz with CL40 latency and 1.1V voltage. It uses a 4Rx4 rank configuration and 288-pin form factor for HPE server compatibility. The ECC registered design targets data integrity in enterprise workloads.

DDR5 4800 Interface Practical Limits

DDR5 4800 delivers 38400 MB/s peak bandwidth per module. Registered buffering adds one clock cycle of latency versus unbuffered memory. The 1.1V operating voltage reduces power draw compared to earlier DDR generations. Mixed-speed populations will downclock to the slowest installed module.

128GB 4Rx4 Capacity Constraint

A single 128GB 4Rx4 module occupies one DIMM slot but presents four logical ranks to the memory controller. Platforms limited to eight ranks per channel can only populate two such modules per channel. Systems requiring higher densities per slot or lower rank counts for maximum channel population should evaluate alternative configurations.

Highlights

  • 128 GB DDR5 4800 MHz capacity for large-scale workloads
  • CL40 latency at 1.1 V for efficient server operation
  • 4Rx4 registered ECC design protects data integrity
  • 288-pin RDIMM form factor fits HPE P63345-B21 systems
  • Built with Samsung, Micron or Hynix chips for reliability

Specifications

BrandNEMIX RAM
SeriesHPE Server/Workstation Compatible Series Memory
ModelHPE DDR5 4800MHZ ECC RDIMM Registered Server Memory
Part NumberMR38400-744K1
Capacity128GB
SpeedDDR5 4800 (PC5 38400)
ECCYes
Buffered/RegisteredRegistered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemHPE
CAS LatencyCL40
Heat SpreaderNo
Type288-Pin DDR5 RDIMM
Rank4Rx4
FeaturesDDR5 ECC Registered RDIMM Server Motherboard Compatible
Package Content128GB (1X128GB) DDR5 4800MHZ PC5-38400 4Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Should I pick the 128 GB module or combine smaller DIMMs to reach the same capacity?

This listing is a single 128 GB stick, so one module fills one slot and delivers the full capacity.

What does the 4800 MT/s rating mean for actual throughput in my server?

The module runs at DDR5 4800, giving a peak transfer rate of PC5 38400 MB/s when the platform supports that speed.

Is the 288-pin RDIMM interface compatible with standard DDR5 server boards, and does the 4Rx4 rank limit how many I can install?

It uses the 288-pin DDR5 RDIMM form factor with 4Rx4 organisation; population limits depend on the specific HPE server memory controller.

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