Samsung - DDR5 - Module - 32GB - DIMM 288-PIN Low Profile - 4800 MHz / PC5-38400 - CL40 - registered - ECC (M321R4GA3BB6-CQK)

The Samsung M321R4GA3BB6-CQK is a 32GB DDR5 registered DIMM module with a 288-pin form factor and a 4800 MHz clock speed. Designed for server and PC use, this module features ECC capability with an additional 8-bit parity for error correction and a register to strengthen clock, command and control signals. It supports x4 and x8 device organization and can be configured with up to 2 ranks per DIMM and a 3DPC (three DIMMs per channel) setup.

Advantages

Registered (RDIMM) design improves signal integrity for multi-module server configurations, while ECC parity provides error detection and correction to enhance system reliability. The 4800 MHz DDR5 interface delivers higher bandwidth versus previous generations, and the 288-pin DIMM form factor ensures compatibility with standard DDR5 server motherboards. Low operating voltage (1.1 V) reduces power consumption compared with older memory types.

Suitable for

• Server platforms requiring registered ECC memory
• Workstations and PCs used for data-intensive tasks
• Multi-DIMM configurations and systems using 3DPC setups
• Environments prioritizing data integrity and uptime

Key specifications

• Manufacturer: Samsung
• Model: M321R4GA3BB6-CQK
• Capacity: 32 GB
• Memory type: DDR5
• Speed: 4800 MHz
• Form factor: 288-pin DIMM (Registered DIMM)
• ECC: 8-bit parity (error correction capable)
• Organization: supports x4 / x8 device organization
• Ranks: up to 2 ranks per DIMM
• Configuration: supports 3DPC
• Voltage: 1.1 V

How to use

Install the module into a compatible DDR5 288-pin DIMM slot on a server or motherboard that supports registered ECC DDR5 memory. Follow the system vendor’s guidelines for population order when using multiple DIMMs and configure memory settings in BIOS/UEFI as required. Ensure modules are properly seated and latched before powering on the system.

Recommendations

Use this registered ECC DDR5 module in server or workstation environments where data integrity and stable multi-module operation are required. Verify motherboard and CPU compatibility with RDIMM DDR5 modules and consult the system manual for supported ranks and 3DPC population rules.