Samsung M393A8G40AB2-CWE 64G DDR4 3200 RDIMM
The Samsung M393A8G40AB2-CWE is a 64GB DDR4 ECC Registered DIMM (RDIMM) rated for 3200 MT/s, built for enterprise servers, data center platforms, virtualization hosts, and HPC clusters. Its registered, x4-based DRAM design prioritizes reliability and error correction, making it a solid choice for memory-intensive workloads such as VM consolidation and cache-tier deployments. As a DDR4 module, it is not backward-compatible with DDR5 platforms, so confirm your server’s memory generation and population rules before ordering.
Key specifications (table)
| Parameter | Specification |
| Model Number | M393A8G40AB2-CWE |
| Brand | Samsung |
| Memory Type | DDR4 ECC RDIMM (Registered DIMM) |
| Capacity | 64GB |
| Data Rate | 3200 MT/s (actual speed may step down depending on CPU memory controller and DIMM population) |
| Speed Grade | PC4-25600R |
| Rank Configuration | 2Rx4 (dual rank; higher-rank modules often support greater capacities per channel) |
| Error Correction | ECC Supported |
| CAS Latency | CL22 |
| Operating Voltage | 1.2V |
| Pin Count | 288-pin |
| Form Factor | RDIMM |
| DRAM Organization | x4-based DRAM (typical for error-correcting server memory) |
| Module Type | Registered ECC Server Memory |
| Operating Temperature | 0°C to 85°C |
| Compliance | JEDEC DDR4 Standard |
| Applications | Enterprise Servers, Data Centers, Cloud Computing, Virtualization, and High-Performance Computing (HPC) |
Good to know
- This is a DDR4 RDIMM and cannot be mixed with DDR5 modules, LRDIMMs should also not be combined with RDIMMs in the same channel — verify your platform’s qualified memory list (QVL) and population guidelines before deployment.
- Within Samsung’s DDR4 server lineup, this 2Rx4 64GB module at 3200 MT/s sits in the mainstream performance tier for two-socket enterprise platforms, balancing density and bandwidth without requiring load-reduced (LRDIMM) designs.
- When populating multiple channels, install identical modules (same capacity, rank, and speed grade) per channel for optimal performance; confirm actual supported speed against your CPU and motherboard specification, as RDIMM speed can be derated at high DIMM counts.
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 M393A8G40AB2-CWE is a 64GB DDR4 ECC Registered DIMM (RDIMM) rated for 3200 MT/s, built for enterprise servers, data center platforms, virtualization hosts, and HPC clusters. Its registered, x4-based DRAM design prioritizes reliability and error correction, making it a solid choice for memory-intensive workloads such as VM consolidation and cache-tier deployments. As a DDR4 module, it is not backward-compatible with DDR5 platforms, so confirm your server’s memory generation and population rules before ordering.
Key specifications (table)
| Parameter | Specification |
| Model Number | M393A8G40AB2-CWE |
| Brand | Samsung |
| Memory Type | DDR4 ECC RDIMM (Registered DIMM) |
| Capacity | 64GB |
| Data Rate | 3200 MT/s (actual speed may step down depending on CPU memory controller and DIMM population) |
| Speed Grade | PC4-25600R |
| Rank Configuration | 2Rx4 (dual rank; higher-rank modules often support greater capacities per channel) |
| Error Correction | ECC Supported |
| CAS Latency | CL22 |
| Operating Voltage | 1.2V |
| Pin Count | 288-pin |
| Form Factor | RDIMM |
| DRAM Organization | x4-based DRAM (typical for error-correcting server memory) |
| Module Type | Registered ECC Server Memory |
| Operating Temperature | 0°C to 85°C |
| Compliance | JEDEC DDR4 Standard |
| Applications | Enterprise Servers, Data Centers, Cloud Computing, Virtualization, and High-Performance Computing (HPC) |
Good to know
- This is a DDR4 RDIMM and cannot be mixed with DDR5 modules, LRDIMMs should also not be combined with RDIMMs in the same channel — verify your platform’s qualified memory list (QVL) and population guidelines before deployment.
- Within Samsung’s DDR4 server lineup, this 2Rx4 64GB module at 3200 MT/s sits in the mainstream performance tier for two-socket enterprise platforms, balancing density and bandwidth without requiring load-reduced (LRDIMM) designs.
- When populating multiple channels, install identical modules (same capacity, rank, and speed grade) per channel for optimal performance; confirm actual supported speed against your CPU and motherboard specification, as RDIMM speed can be derated at high DIMM counts.
For tray and reel pricing, current stock by part number and date code, and volume discounts on bulk orders, request a bulk quotation.
