The CT51264BF186DJ is a DDR3 memory module from Crucial Bulk, designed to significantly enhance system performance through faster data handling capabilities. This module operates at a DDR3-1866 speed, ensuring that data transactions are executed swiftly, making it an ideal upgrade for users requiring more memory bandwidth for intensive applications and multitasking. It features a 512Mx64 SODIMM arrangement, providing a generous 4GB of memory. This capacity is perfect for advanced computing tasks, including graphic design, gaming, and other memory-intensive operations. The use of a 204-pin SODIMM form factor allows for compatibility with a wide range of laptops and small form factor PCs. Produced with state-of-the-art memory technology, the CT51264BF186DJ epitomizes Crucial Bulk's commitment to reliability and performance excellence, catering to users looking to boost their computing devices' efficiency and responsiveness.