Do more. Faster. Longer. A breakthrough in innovation the Crucial M550 SSD is over 20 times faster than a typical hard drive* and consumes significantly less power. It enables your computer to boot up almost immediately load files and programs almost instantly accelerate demanding applications and manage power so that your battery lasts up to 50 minutes longer. Consistently fast speeds. No exceptions. Every manufacturer has ideas about how to deliver better performance. Some use file compression schemes but those don t help video audio or graphic files that are already compressed. Some steal system memory to improve a slow drive. The Crucial M550 treats all files the same regardless of whether they re compressed or uncompressed so the specs we advertise are the same ones you ll see in real world use: true 550 MB/s sequential reads across all file types.