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Samsung M386A8K40DM2-CWEZQ 64GB DDR4-3200MHz LRDIMM 4Rx4 CL22 Memory
- 64GB DDR4 Memory Module.
- RDIMM (Registered DIMM) type.
- Speed: 3200MHz (PC4-25600).
- CAS Latency: CL22.
- Rank Configuration: 4Rx4 (Quad Rank x4).
- Designed for servers and high-end workstations.
- ECC (Error-Correcting Code) support.
- Voltage: Standard DDR4 voltage (typically 1.2V).
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Product Overview
The Samsung M386A8K40DM2-CWEZQ is a 64GB DDR4 LRDIMM memory module designed for high-performance servers and workstations. It operates at 3200MHz with CL22 timings and features a 4Rx4 rank configuration.
Technical Information
| Memory Type | DDR4 SDRAM |
| Capacity | 64GB |
| Form Factor | LRDIMM (Load-Reduced DIMM) |
| Speed | 3200MHz |
Additional Specifications
| Part Number | M386A8K40DM2-CWEZQ |
| CAS Latency | CL22 |
| Rank | 4Rx4 |
| ECC | Yes (Registered) |
Product Description
The Samsung M386A8K40DM2-CWEZQ is a high-capacity 64GB memory module engineered for demanding server and workstation environments. It utilizes DDR4 SDRAM technology, offering significant improvements in speed and power efficiency over previous generations. As a Load-Reduced DIMM (LRDIMM), it incorporates an additional buffer chip that reduces the electrical load on the memory controller, allowing for higher memory capacities and increased module density within a system. This makes it ideal for systems requiring substantial amounts of RAM, such as those used for virtualization, large databases, scientific computing, and complex data analytics. Operating at a rapid speed of 3200MHz (also known as PC4-25600), this module ensures fast data transfer rates, which is critical for optimizing application performance and overall system responsiveness. The CAS Latency (CL) of 22 indicates the number of clock cycles required to access data, and combined with the high frequency, it provides excellent performance characteristics. The 4Rx4 rank configuration signifies that the module has four ranks, each with a data width of four bits, further enhancing bandwidth and performance by allowing the memory controller to access data from multiple ranks simultaneously. Furthermore, the M386A8K40DM2-CWEZQ is a Registered DIMM (RDIMM), meaning it includes a register chip that buffers command and address signals. This reduces the electrical load on the memory controller, enabling systems to support more memory modules and higher total memory capacities. It also incorporates ECC (Error-Correcting Code) functionality, which detects and corrects single-bit errors in real-time, significantly improving system stability and data integrity – a crucial feature for mission-critical server applications. This combination of high capacity, speed, LRDIMM architecture, and ECC makes it a robust choice for enterprise-grade computing.



