The Crucial 8GB DDR4-2133MHz CT8G4SFD8213 SODIMM RAM is a high-performance laptop memory module designed for increased speed and efficiency. With a total capacity of 8GB spread across one module, it offers fast data transfer rates at PC4-17000 (DDR4-2133) bus speed. This DDR4 SDRAM memory module is ideal for enhancing the performance of laptops and ensuring smooth multitasking and application usage. Additionally, the module features ECC memory for error correction and reliability, backed by a lifetime manufacturer warranty for peace of mind.