Samsung M321R4GA0BB0-CQK 32G DDR5 4800 RDIMM
The Samsung M321R4GA0BB0-CQK is a 32GB DDR5 ECC Registered DIMM (RDIMM) rated at DDR5-4800 (PC5-38400), aimed at enterprise buyers provisioning servers, workstations, data center nodes, and cloud computing platforms. It fits workloads such as virtualization hosts and cache-tier deployments where registered, ECC-protected memory is required. Note that as a DDR5 RDIMM it is only compatible with DDR5 RDIMM-capable platforms and cannot be mixed with DDR4 or UDIMM modules in the same system.
Key specifications (table)
| Parameter | Specification |
| Brand | Samsung |
| Part Number | M321R4GA0BB0-CQK |
| Memory Type | DDR5 ECC Registered DIMM (RDIMM) |
| Capacity | 32GB |
| Speed | DDR5-4800 / PC5-38400 |
| Data Transfer Rate | 4800 MT/s |
| Rank Configuration | 2Rx8 (dual rank) |
| ECC Support | Yes |
| Operating Voltage | 1.1V (lower than DDR4’s 1.2V, aiding power efficiency) |
| Pin Count | 288-pin |
| Module Type | RDIMM |
| Chip Organization | (2G × 8) × 20 |
| CAS Latency | CL40 |
| Application | Enterprise Servers, Workstations, Data Centers, Cloud Computing Platforms |
| Operating Environment | 24/7 Enterprise-Class Operation |
| Product Status | Enterprise-Class Mass Production |
Good to know
- Compatibility: requires a DDR5 RDIMM-capable server/workstation platform; DDR5 RDIMMs are not backward compatible with DDR4 slots and should not be mixed with DDR5 UDIMM/SODIMM modules. For best bandwidth, populate memory channels per your motherboard vendor’s population guide.
- Within Samsung’s DDR5 RDIMM family, this module sits at the DDR5-4800 speed grade with a dual-rank 2Rx8 configuration; dual-rank modules can improve effective performance in memory-intensive workloads, though some platforms support fewer of them per channel than single-rank.
- Buying tip: always cross-check the part number against your server’s qualified vendor list (QVL) or vendor compatibility report before ordering, since supported speeds and ranks are ultimately platform dependent.
For tray and reel pricing, current stock by part number and date code, and volume discounts on bulk orders, request a bulk quotation.
The Samsung M321R4GA0BB0-CQK is a 32GB DDR5 ECC Registered DIMM (RDIMM) rated at DDR5-4800 (PC5-38400), aimed at enterprise buyers provisioning servers, workstations, data center nodes, and cloud computing platforms. It fits workloads such as virtualization hosts and cache-tier deployments where registered, ECC-protected memory is required. Note that as a DDR5 RDIMM it is only compatible with DDR5 RDIMM-capable platforms and cannot be mixed with DDR4 or UDIMM modules in the same system.
Key specifications (table)
| Parameter | Specification |
| Brand | Samsung |
| Part Number | M321R4GA0BB0-CQK |
| Memory Type | DDR5 ECC Registered DIMM (RDIMM) |
| Capacity | 32GB |
| Speed | DDR5-4800 / PC5-38400 |
| Data Transfer Rate | 4800 MT/s |
| Rank Configuration | 2Rx8 (dual rank) |
| ECC Support | Yes |
| Operating Voltage | 1.1V (lower than DDR4’s 1.2V, aiding power efficiency) |
| Pin Count | 288-pin |
| Module Type | RDIMM |
| Chip Organization | (2G × 8) × 20 |
| CAS Latency | CL40 |
| Application | Enterprise Servers, Workstations, Data Centers, Cloud Computing Platforms |
| Operating Environment | 24/7 Enterprise-Class Operation |
| Product Status | Enterprise-Class Mass Production |
Good to know
- Compatibility: requires a DDR5 RDIMM-capable server/workstation platform; DDR5 RDIMMs are not backward compatible with DDR4 slots and should not be mixed with DDR5 UDIMM/SODIMM modules. For best bandwidth, populate memory channels per your motherboard vendor’s population guide.
- Within Samsung’s DDR5 RDIMM family, this module sits at the DDR5-4800 speed grade with a dual-rank 2Rx8 configuration; dual-rank modules can improve effective performance in memory-intensive workloads, though some platforms support fewer of them per channel than single-rank.
- Buying tip: always cross-check the part number against your server’s qualified vendor list (QVL) or vendor compatibility report before ordering, since supported speeds and ranks are ultimately platform dependent.
For tray and reel pricing, current stock by part number and date code, and volume discounts on bulk orders, request a bulk quotation.
