Samsung M321R8GA0PB0-CWM 64G DDR5 5600 RDIMM
The Samsung M321R8GA0PB0-CWM is a 64GB DDR5-5600 registered ECC DIMM built for enterprise servers, cloud platforms, databases, and AI training workloads. It targets system integrators and data center procurement teams outfitting DDR5-generation platforms, where registered modules with on-die ECC are required. Note that RDIMMs are keyed differently from desktop UDIMMs and cannot be mixed with DDR4 or DDR3 memory on any platform.
Key specifications (table)
| Parameter | Specification |
|---|---|
| Brand | Samsung |
| Part Number | M321R8GA0PB0-CWM |
| Memory Type | DDR5 ECC Registered DIMM (RDIMM) |
| Capacity | 64GB |
| Speed | DDR5-5600 / PC5-44800 |
| Data Transfer Rate | 5600 MT/s |
| Rank Configuration | 2Rx4 (dual-rank; well suited to memory-hungry workloads) |
| ECC Support | Yes |
| Operating Voltage | 1.1V (lower than DDR4, aiding thermal headroom) |
| Pin Count | 288-pin |
| Module Type | RDIMM |
| Chip Organization | (4G × 4) × 40 |
| CAS Latency | CL46 |
| Application | Enterprise servers, cloud computing, AI training, databases, data centers |
| Operating Environment | 24/7 enterprise-class operation |
| Product Status | Mass production |
Good to know
- DDR5 RDIMMs require a DDR5-compatible server platform (e.g., current-generation Intel Xeon or AMD EPYC); verify your motherboard’s QVL and maximum supported speed, since effective data rate is platform dependent and may be derated when many DIMMs are populated.
- Within Samsung’s DDR5 RDIMM family, this 64GB dual-rank (2Rx4) module offers a strong balance of density and channel efficiency for virtualization hosts and cache tiers; lower-capacity single-rank variants exist where per-channel DIMM count is prioritized over density.
- For balanced channel population, install identical modules in matched sets per CPU memory channel — mixing capacities or ranks across channels can reduce effective bandwidth or prevent POST, so confirm your server vendor’s population guidance before ordering.
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 M321R8GA0PB0-CWM is a 64GB DDR5-5600 registered ECC DIMM built for enterprise servers, cloud platforms, databases, and AI training workloads. It targets system integrators and data center procurement teams outfitting DDR5-generation platforms, where registered modules with on-die ECC are required. Note that RDIMMs are keyed differently from desktop UDIMMs and cannot be mixed with DDR4 or DDR3 memory on any platform.
Key specifications (table)
| Parameter | Specification |
|---|---|
| Brand | Samsung |
| Part Number | M321R8GA0PB0-CWM |
| Memory Type | DDR5 ECC Registered DIMM (RDIMM) |
| Capacity | 64GB |
| Speed | DDR5-5600 / PC5-44800 |
| Data Transfer Rate | 5600 MT/s |
| Rank Configuration | 2Rx4 (dual-rank; well suited to memory-hungry workloads) |
| ECC Support | Yes |
| Operating Voltage | 1.1V (lower than DDR4, aiding thermal headroom) |
| Pin Count | 288-pin |
| Module Type | RDIMM |
| Chip Organization | (4G × 4) × 40 |
| CAS Latency | CL46 |
| Application | Enterprise servers, cloud computing, AI training, databases, data centers |
| Operating Environment | 24/7 enterprise-class operation |
| Product Status | Mass production |
Good to know
- DDR5 RDIMMs require a DDR5-compatible server platform (e.g., current-generation Intel Xeon or AMD EPYC); verify your motherboard’s QVL and maximum supported speed, since effective data rate is platform dependent and may be derated when many DIMMs are populated.
- Within Samsung’s DDR5 RDIMM family, this 64GB dual-rank (2Rx4) module offers a strong balance of density and channel efficiency for virtualization hosts and cache tiers; lower-capacity single-rank variants exist where per-channel DIMM count is prioritized over density.
- For balanced channel population, install identical modules in matched sets per CPU memory channel — mixing capacities or ranks across channels can reduce effective bandwidth or prevent POST, so confirm your server vendor’s population guidance before ordering.
For tray and reel pricing, current stock by part number and date code, and volume discounts on bulk orders, request a bulk quotation.
