What is RAM?
Your computer's working memory — what's active right now.
// Explanation
RAM is where the computer stores everything it's currently using: open apps, loaded files, program states. It's different from the hard drive (permanent storage): RAM is fast but temporary — when you shut down, it's wiped. In AI, RAM (and especially GPU VRAM) determines how large the models you can run locally are.
// Example
If you have tons of tabs open and your computer slows down, it's because RAM is full. Closing tabs frees RAM. The hard drive has nothing to do with it.