The Samsung M321R8GA0BB0-CQK is a 64GB DDR5 server memory module designed for compatible systems that require ECC Registered DIMM memory. Operating at a rated data transfer rate of 4800 MT/s, this module provides high-capacity memory for supported enterprise servers and professional computing environments.
Featuring a dual-rank 2Rx4 organization, CL40 latency, and a nominal operating voltage of 1.1V, this module uses the PC5-38400 memory standard. Its 288-pin Registered DIMM design is intended for compatible server platforms that support DDR5 ECC registered memory.
Key Features
- 64GB Memory Capacity: Provides 64GB of DDR5 SDRAM in a single memory module for compatible server configurations.
- DDR5-4800 Data Rate: Supports a rated transfer speed of 4800 MT/s, corresponding to the PC5-38400 standard.
- ECC Registered Technology: Combines error-correcting code support with registered DIMM technology for supported server platforms.
- Dual-Rank 2Rx4 Organization: Uses a dual-rank memory configuration with x4 DRAM organization.
- 288-Pin, 1.1V Design: Features a 288-pin DIMM form factor and nominal operating voltage of 1.1V.
Technical Specifications
| Brand | Samsung |
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| Part Number / MPN | M321R8GA0BB0-CQK |
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| Product Type | Server Memory Module |
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| Capacity | 64GB |
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| Memory Technology | DDR5 SDRAM |
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| Data Transfer Rate | 4800 MT/s |
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| Memory Standard | DDR5-4800 / PC5-38400 |
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| Module Type | Registered DIMM (RDIMM) |
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| Error Correction | ECC |
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| Rank and Organization | Dual Rank, 2Rx4 |
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| CAS Latency | CL40 |
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| Form Factor | DIMM |
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| Pin Count | 288-pin |
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| Operating Voltage | 1.1V |
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| Intended Application | Compatible servers and enterprise computing systems |
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Compatibility and Installation
The Samsung M321R8GA0BB0-CQK is designed for server platforms that support DDR5 ECC Registered DIMMs. Before purchasing, consult the server manufacturer's documentation to confirm support for this exact part number, module capacity, rank organization, and rated data transfer speed.
Actual operating speed may depend on the processor, motherboard, firmware, and installed memory configuration. DDR5 registered memory is not interchangeable with DDR4 modules or standard unbuffered desktop DIMMs.
DC Supplies Product Note
DC Supplies recommends verifying the exact MPN, M321R8GA0BB0-CQK, against your server's memory compatibility list before ordering. Confirm that the system supports 64GB DDR5-4800 ECC registered memory with a dual-rank 2Rx4 organization.
Frequently Asked Questions
1. What is the capacity of the Samsung M321R8GA0BB0-CQK?
This Samsung server memory module has a capacity of 64GB.
2. What is the rated speed of this memory?
It is rated at 4800 MT/s and uses the DDR5-4800 / PC5-38400 memory classification.
3. Does this module support ECC?
Yes. It is ECC registered memory designed for compatible server platforms.
4. What does 2Rx4 mean?
2Rx4 identifies the module's dual-rank organization and x4 DRAM organization.
5. Can this memory be installed in any DDR5 computer?
No. This module is a registered DIMM intended for compatible server systems. Confirm that the host platform supports DDR5 ECC RDIMMs before installation.
6. What voltage does this memory use?
The module has a nominal operating voltage of 1.1V.
