Key advantages of using solid-state drives (SSDs) over traditional hard drives (HDDs) include faster data access speeds, better durability, and lower power consumption. SSDs use flash memory, which allows for near-instantaneous read and write times, significantly improving system performance and boot-up speeds. Their lack of moving parts means they are less prone to mechanical failure, making them more reliable. Additionally, SSDs run cooler and consume less energy, contributing to overall efficiency and longer battery life in laptops and portable devices.