Overview The Samsung M391A2K43BB1-CTD is a 16GB DDR4 memory module designed to enhance the performance and reliability of desktops and workstations. Operating at 2666 MHz, it provides the bandwidth necessary for demanding tasks like 3D rendering, data analysis, and extensive multitasking. Its ECC capability ensures data integrity by detecting and correcting single-bit errors, making it suitable for professional environments where accuracy is critical. Key features High transfer rate of 2666 MHz (PC4-21300) supports smooth and efficient data processing for intensive applications. ECC support actively detects and corrects single-bit errors, reducing the risk of data corruption in sensitive workloads. Standard 288-pin UDIMM form factor allows for easy installation in compatible motherboards without compatibility concerns. Low operating voltage of 1.2 V helps minimize power consumption and heat generation, supporting stable operation during extended use. 2R x 8 memory configuration balances performance and capacity, making it a reliable choice for high-end desktops and workstations. Key specs Memory capacity: 16 GB Memory type: DDR4 Speed: 2666 MHz (PC4-21300) Memory layout: 2R x 8 ECC support: Yes Form factor: 288-pin UDIMM Operating voltage: 1.2 V Compatibility and usage This memory module fits motherboards that support DDR4 PC4-21300 UDIMM slots, making it a straightforward upgrade for many desktop and workstation systems. It is well suited for users who require stable and large-capacity memory for professional tasks such as engineering simulations, content creation, and server applications. Adding this module can improve system responsiveness and reduce errors in data-intensive environments.