Samsung M321RAGA0B20-CWK 128G DDR5 4800 RDIMM
The Samsung M321RAGA0B20-CWK is a 128GB DDR5 ECC Registered DIMM (RDIMM) built for enterprise servers running AI workloads, cloud computing platforms, databases, and other data center and high-performance computing environments. It suits system integrators and IT buyers provisioning capacity-heavy hosts such as virtualization servers or cache tiers. As with all RDIMMs, verify your platform’s supported speed and population rules before ordering, since achieved data rates depend on the memory controller and DIMM configuration.
Key specifications (table)
| Parameter | Specification |
|---|---|
| Brand | Samsung |
| Part Number | M321RAGA0B20-CWK |
| Memory Type | DDR5 ECC Registered DIMM (RDIMM) |
| Capacity | 128GB (single module) |
| Speed | DDR5-5600 / PC5-44800 |
| Data Transfer Rate | 5600 MT/s (actual rate may vary by platform support) |
| Rank Configuration | 2Rx4 (dual rank) |
| ECC Support | Yes (on-die plus registered ECC, per DDR5 RDIMM design) |
| Operating Voltage | 1.1V (lower than DDR4’s typical 1.2V) |
| Pin Count | 288-pin |
| Module Type | RDIMM |
| Chip Organization | High-Density DDR5 DRAM Components |
| CAS Latency | CL46 |
| Application | AI Servers, Cloud Computing, Databases, Data Centers, High-Performance Computing |
| Operating Environment | 24/7 Enterprise-Class Operation |
| Product Status | Enterprise-Class Mass Production |
Good to know
- DDR5 RDIMMs are not backward compatible with DDR4 platforms, and DDR4 RDIMMs cannot be mixed with DDR5 in the same system — confirm your server’s generation and 288-pin DIMM slot support before purchase.
- Within Samsung’s DDR5 RDIMM lineup, this dual-rank (2Rx4) 128GB module targets high-capacity configurations where populating fewer slots with larger modules helps preserve future expansion headroom and can simplify channel population planning.
- Buying tip: confirm your platform’s validated memory qualified vendor list (QVL) and supported speed at your intended population, since rated 5600 MT/s performance is dependent on CPU memory controller and configuration.
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 M321RAGA0B20-CWK is a 128GB DDR5 ECC Registered DIMM (RDIMM) built for enterprise servers running AI workloads, cloud computing platforms, databases, and other data center and high-performance computing environments. It suits system integrators and IT buyers provisioning capacity-heavy hosts such as virtualization servers or cache tiers. As with all RDIMMs, verify your platform’s supported speed and population rules before ordering, since achieved data rates depend on the memory controller and DIMM configuration.
Key specifications (table)
| Parameter | Specification |
|---|---|
| Brand | Samsung |
| Part Number | M321RAGA0B20-CWK |
| Memory Type | DDR5 ECC Registered DIMM (RDIMM) |
| Capacity | 128GB (single module) |
| Speed | DDR5-5600 / PC5-44800 |
| Data Transfer Rate | 5600 MT/s (actual rate may vary by platform support) |
| Rank Configuration | 2Rx4 (dual rank) |
| ECC Support | Yes (on-die plus registered ECC, per DDR5 RDIMM design) |
| Operating Voltage | 1.1V (lower than DDR4’s typical 1.2V) |
| Pin Count | 288-pin |
| Module Type | RDIMM |
| Chip Organization | High-Density DDR5 DRAM Components |
| CAS Latency | CL46 |
| Application | AI Servers, Cloud Computing, Databases, Data Centers, High-Performance Computing |
| Operating Environment | 24/7 Enterprise-Class Operation |
| Product Status | Enterprise-Class Mass Production |
Good to know
- DDR5 RDIMMs are not backward compatible with DDR4 platforms, and DDR4 RDIMMs cannot be mixed with DDR5 in the same system — confirm your server’s generation and 288-pin DIMM slot support before purchase.
- Within Samsung’s DDR5 RDIMM lineup, this dual-rank (2Rx4) 128GB module targets high-capacity configurations where populating fewer slots with larger modules helps preserve future expansion headroom and can simplify channel population planning.
- Buying tip: confirm your platform’s validated memory qualified vendor list (QVL) and supported speed at your intended population, since rated 5600 MT/s performance is dependent on CPU memory controller and configuration.
For tray and reel pricing, current stock by part number and date code, and volume discounts on bulk orders, request a bulk quotation.
