You're using a computer, and wondering why it's acting funny, and why it's always crashing before you hit that save button.
You're a gamer, and you want to see why it always crashes in front of the last boss.
Or you're a wookie. We like wookies.
OCCT has a test for every major component in your system. We sometimes even have several just to get you covered. If there's something wrong, we'll report it, and OCCT's reputation at finding flaws will help you get the faulty part RMA'ed.
Always keep an eye on your system's vitals with the integrated version of HwInfo, the best monitoring software out there. If it's overheating, you'll know. If there's a voltage drop, you'll know. If your computer doesn't straight up reboot, that is.
OCCT is the most popular all-in-one stability check & stress test tool available.