The Samsung M321RAGA0B20-CWK is a 128GB DDR5 server memory module designed for compatible enterprise servers and data centre platforms. Operating at a rated data transfer speed of 4800 MT/s, this ECC registered DIMM provides high memory capacity for demanding server workloads.
Built with a 288-pin form factor and quad-rank 4Rx4 organization, this Samsung module supports error-correcting memory functionality and registered signal processing. It operates at a rated voltage of 1.1V and is intended for server systems that specifically support DDR5 ECC RDIMM memory.
Key Features
- 128GB Memory Capacity: Provides high-capacity memory for compatible enterprise servers, virtualization hosts, and data-intensive applications.
- DDR5-4800 Performance: Supports a rated data transfer speed of 4800 MT/s, equivalent to PC5-38400.
- ECC Registered Memory: Combines error-correcting capabilities with registered DIMM technology for supported server platforms.
- Quad-Rank 4Rx4 Organization: Uses a quad-rank memory configuration with x4 DRAM organization and 3DS technology.
- 288-Pin, 1.1V Design: Uses a DDR5 RDIMM form factor with a rated operating voltage of 1.1V.
Technical Specifications
| Brand | Samsung |
|---|
| Part Number / MPN | M321RAGA0B20-CWK |
|---|
| Product Type | Server Memory Module |
|---|
| Capacity | 128GB |
|---|
| Memory Technology | DDR5 SDRAM |
|---|
| Memory Speed | 4800 MT/s |
|---|
| Memory Standard | DDR5-4800 / PC5-38400 |
|---|
| Module Type | Registered DIMM (RDIMM) |
|---|
| Error Correction | ECC |
|---|
| Rank Configuration | Quad Rank (4Rx4) |
|---|
| Memory Technology | 3DS DDR5 Registered Memory |
|---|
| CAS Latency | CL40 |
|---|
| Operating Voltage | 1.1V |
|---|
| Pin Count | 288-pin |
|---|
| Module Organization | 16G x72 |
|---|
| DRAM Organization | 4G x4 |
|---|
| Application | Compatible enterprise servers and data centre systems |
|---|
Suitable Applications
The Samsung M321RAGA0B20-CWK is designed for compatible server platforms that require high-capacity DDR5 registered memory. Potential applications include:
- Enterprise server infrastructure
- Virtualization and virtual machine hosts
- Large database environments
- Data centre and cloud computing systems
- Memory-intensive business applications
Compatibility Information
This module is a DDR5 ECC Registered DIMM (RDIMM), not a standard desktop unbuffered DIMM or laptop SO-DIMM. The host system must explicitly support DDR5 registered memory, 128GB modules, and the module's rank and 3DS configuration.
Supported memory speed and capacity depend on the server model, processor, firmware, and memory population rules. Check the system manufacturer's memory compatibility list before purchasing or installing this module.
DC Supplies Product Note
DC Supplies recommends verifying the complete part number against your server's memory specifications before ordering. Confirm support for 128GB DDR5-4800 ECC RDIMM modules with 4Rx4 organization and 3DS technology to help ensure compatibility.
Frequently Asked Questions
1. What is the capacity of the Samsung M321RAGA0B20-CWK?
This Samsung server memory module has a capacity of 128GB.
2. What speed does this memory support?
It is rated for DDR5-4800 operation, with a data transfer rate of 4800 MT/s and a PC5-38400 classification. The actual operating speed depends on the supported server configuration.
3. Does this module support ECC?
Yes. It is an ECC registered DIMM designed for compatible server platforms.
4. What does 4Rx4 mean?
The 4Rx4 designation indicates a quad-rank memory module using x4 DRAM organization. This module also uses 3DS memory technology, so platform compatibility should be checked carefully.
5. Can I use this memory in a standard desktop computer?
Generally, no. Most standard desktop systems use unbuffered memory rather than registered server DIMMs. The motherboard and processor must explicitly support DDR5 RDIMM memory.
6. Will this module work in every DDR5 server?
No. Compatibility depends on the server platform, processor, supported memory capacity, rank configuration, and 3DS support. Consult the server manufacturer's documentation before ordering.
