Samsung M393AAG40M32-CAE 128G DDR4 3200 RDIMM
The Samsung M393AAG40M32-CAE is a 128GB DDR4-3200 registered ECC DIMM aimed at enterprise buyers and system integrators building or expanding memory for servers, virtualization hosts, and cloud or AI compute nodes. As a quad-rank RDIMM built on 3DS stacked DRAM, it is well suited to high-density deployments where maximizing capacity per slot matters most. Note that as DDR4 RDIMM it cannot be mixed with DDR5 or unbuffered desktop modules on the same platform.
Key specifications (table)
| Parameter | Specification |
|---|---|
| Brand | Samsung |
| Part Number | M393AAG40M32-CAE |
| Memory Type | DDR4 ECC Registered DIMM (RDIMM) |
| Capacity | 128GB |
| Speed | DDR4-3200 / PC4-25600 |
| Data Transfer Rate | 3200 Mbps |
| Rank Configuration | 4Rx4 (quad rank, high-density) |
| ECC Support | Yes (requires platform with ECC support) |
| Operating Voltage | 1.2V (standard DDR4) |
| Pin Count | 288-pin |
| Module Type | RDIMM |
| Chip Organization | (3DS 2H 8G × 4) × 36 (stacked-die construction) |
| CAS Latency | CL22 |
| Application | Enterprise servers, data centers, cloud computing, AI computing, virtualization platforms |
| Operating Environment | 24/7 enterprise-class operation |
Good to know
- Compatibility is platform dependent: verify your server (e.g., Intel Xeon Scalable or AMD EPYC Gen 1/2/3 generation) supports 128GB quad-rank RDIMMs and check the vendor’s validated memory list before ordering.
- Within Samsung’s DDR4 RDIMM line, this module sits at the high-density end; quad-rank 128GB modules let you populate fewer DIMM slots to reach large memory footprints, but quad-rank loading may limit maximum supported speed per channel depending on population rules.
- Buying tip: for multi-channel servers, purchase matched modules (same part number and rank) in full kits to keep channel population balanced and avoid training issues at boot.
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 M393AAG40M32-CAE is a 128GB DDR4-3200 registered ECC DIMM aimed at enterprise buyers and system integrators building or expanding memory for servers, virtualization hosts, and cloud or AI compute nodes. As a quad-rank RDIMM built on 3DS stacked DRAM, it is well suited to high-density deployments where maximizing capacity per slot matters most. Note that as DDR4 RDIMM it cannot be mixed with DDR5 or unbuffered desktop modules on the same platform.
Key specifications (table)
| Parameter | Specification |
|---|---|
| Brand | Samsung |
| Part Number | M393AAG40M32-CAE |
| Memory Type | DDR4 ECC Registered DIMM (RDIMM) |
| Capacity | 128GB |
| Speed | DDR4-3200 / PC4-25600 |
| Data Transfer Rate | 3200 Mbps |
| Rank Configuration | 4Rx4 (quad rank, high-density) |
| ECC Support | Yes (requires platform with ECC support) |
| Operating Voltage | 1.2V (standard DDR4) |
| Pin Count | 288-pin |
| Module Type | RDIMM |
| Chip Organization | (3DS 2H 8G × 4) × 36 (stacked-die construction) |
| CAS Latency | CL22 |
| Application | Enterprise servers, data centers, cloud computing, AI computing, virtualization platforms |
| Operating Environment | 24/7 enterprise-class operation |
Good to know
- Compatibility is platform dependent: verify your server (e.g., Intel Xeon Scalable or AMD EPYC Gen 1/2/3 generation) supports 128GB quad-rank RDIMMs and check the vendor’s validated memory list before ordering.
- Within Samsung’s DDR4 RDIMM line, this module sits at the high-density end; quad-rank 128GB modules let you populate fewer DIMM slots to reach large memory footprints, but quad-rank loading may limit maximum supported speed per channel depending on population rules.
- Buying tip: for multi-channel servers, purchase matched modules (same part number and rank) in full kits to keep channel population balanced and avoid training issues at boot.
For tray and reel pricing, current stock by part number and date code, and volume discounts on bulk orders, request a bulk quotation.
