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Samsung M393A8K40B21-CWD 64GB DDR4-2666MHz RDIMM 4Rx4 CL19 Memory
- Capacity: 64GB
- Type: DDR4 RDIMM (Registered DIMM)
- Speed: 2666MHz (PC4-21300)
- CAS Latency: CL19
- Configuration: 4Rx4 (Quad Rank x4)
- Voltage: 1.2V
- ECC: Yes (Error-Correcting Code)
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Product Overview
The Samsung M393A8K40B21-CWD is a high-capacity 64GB DDR4 RDIMM memory module. It operates at a speed of 2666MHz with CL19 latency, designed for servers and workstations requiring significant memory bandwidth and capacity. The 4Rx4 configuration indicates a quad-rank design with x4 data width per rank.
Technical Information
| Capacity | 64 GB |
| Memory Type | DDR4 SDRAM |
| Form Factor | RDIMM |
| Speed | 2666 MHz |
Additional Specifications
| CAS Latency | CL19 |
| Rank | 4Rx4 |
| ECC | Yes |
Product Description
This Samsung 64GB DDR4 RDIMM, model M393A8K40B21-CWD, is a high-performance memory module engineered for demanding server and workstation environments. Operating at a speed of 2666MHz, it provides substantial bandwidth for data-intensive applications, virtualisation, and large-scale data processing. The RDIMM (Registered DIMM) format includes an onboard register that buffers memory commands and addresses, reducing electrical load on the memory controller and allowing for higher memory capacities and speeds. The module features a 4Rx4 configuration, meaning it comprises four ranks, each with a data width of four bits. This configuration is often used in high-density server memory modules to maximize capacity while maintaining performance. The CL19 CAS Latency indicates the number of clock cycles required to access a specific memory column, and while higher than lower CL timings, it is balanced by the module's high speed and capacity for overall system performance. With Error-Correcting Code (ECC) capabilities, this memory module can detect and correct common types of internal data corruption, enhancing system stability and data integrity. This is a critical feature for servers and critical applications where data accuracy and uptime are paramount. The 1.2V standard voltage ensures compatibility with modern DDR4-compatible server platforms.
