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Green printed circuit board with black memory chips and a silver register chip, gold edge connectors visible

Crucial

Crucial 48GB DDR5-6400 RDIMM Desktop Memory

SKU CH-0HMW-0R3XA

Registered DDR5 module with ECC parity for server and workstation reliability

  • Registered design buffers data commands for stable server operation
  • On-die ECC parity detects and corrects single-bit errors for data integrity
  • DDR5-6400 speed feeds memory-intensive workloads with high bandwidth
  • 48 GB capacity supports virtualization and big-data applications
  • Reduced electrical load on the CPU lowers system power draw

48GB RDIMM for Servers

This Crucial DDR5 module delivers 48GB of registered ECC memory rated at 6400 MT/s. It is built for Intel and AMD server platforms that require registered DIMMs for stability. The register chip manages command signals to reduce electrical load on the memory controller. Integrated ECC parity protects data integrity in critical workloads.

Registered DDR5 Constraints

Registered DIMMs are not compatible with standard consumer desktop motherboards that expect unbuffered memory. The module requires a platform with a server-class chipset and CPU that explicitly support RDIMM topology and ECC functionality. Attempting to install it in an unsupported system will prevent boot or cause instability. Verify motherboard and processor documentation before purchase.

Capacity for Virtualisation

The 48GB density suits virtualisation hosts, database nodes and big-data analytics where large memory pools reduce swapping. Multiple modules can scale a system toward the platform's maximum supported capacity. Workloads exceeding the installed total will page to storage and degrade performance. Plan module count per channel to match the CPU's memory controller limits.

Highlights

  • Registered design buffers data commands for stable server operation
  • On-die ECC parity detects and corrects single-bit errors for data integrity
  • DDR5-6400 speed feeds memory-intensive workloads with high bandwidth
  • 48 GB capacity supports virtualization and big-data applications
  • Reduced electrical load on the CPU lowers system power draw

Specifications

BrandCrucial

Questions about this item

Should I choose the 48 GB DDR5-6400 RDIMM or a lower-capacity module for my server?

The 48 GB RDIMM suits memory-intensive workloads such as virtualization and big data; choose a smaller capacity only if your application footprint and budget require it.

What does the DDR5-6400 rating deliver once the module is installed in a server?

It provides a 6400 MT/s data rate with registered buffering and ECC parity, reducing electrical load on the CPU while maintaining signal integrity under heavy multi-threaded loads.

How does the RDIMM interface affect real-world performance limits?

The register chip controls command flow, enabling stable operation at the rated 6400 MT/s across multiple DIMM slots without overloading the memory controller.

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