An SSD is a solid-state drive. SSDs make files load faster, the operating system runs faster, and programs operate more smoothly. At the same time, an SSD may also break down faster than a traditional drive. An SSD is also usually smaller in capacity than a regular hard drive and more expensive, so you get what you pay for. You generally don’t “need” an SSD, but if power and speed are important for you, an SSD can help.