How To Upgrade and Install a New Hard Drive or SSD in Your PC

How-To Geek

A hard drive upgrade is one of the easiest ways to improve your PC, whether you're looking for more storage or the speed boost an SSD provides.

Jason Fitzpatrick / How-to Geek

Choosing between a regular hard drive and an SSD depends on whether you want more speed or more storage for your PC. SSDs are faster but more expensive per gigabyte than regular hard drives.
Hard drives come in two sizes: 2.5" for laptops and 3.5" for desktops. M.2 drives are another form factor to consider, but you need to check if your PC supports them.
M.2 drives are the fastest SSDs available, and use the PCIe bus to transfer data.