Scan your PC and test its stability by generating heavy loads on your system components and detecting overclocking issues and hardware errors. Select from 4 tests, protect your computer from overheating, view the details on its temperature, fan speed and voltages.
OCCT 13.1.10 could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this software available.
OCCT was developed to work on Windows XP, Windows XP Professional, Windows Vista, Windows 7, Windows 8, Windows 10 or Windows 11 and is compatible with 32-bit systems. The following versions: 6.2, 6.1 and 5.5 are the most frequently downloaded ones by the program users.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The actual developer of the program is Ocbase.com. OCCT relates to System Utilities. OCCT.exe and NetworkLaunch.exe are the most frequent filenames for this program's installer. OCCT is sometimes distributed under different names, such as "OCCT Perestroika".
From the developer:
OCCT is a load testing tool for your computer CPU, GPU, and power supply. It can generate heavy loads on your components and detect hardware errors or overclocking issues. At the end of a test, you will be able to save a full graphical report of what happened during the test, for diagnostic purposes
You may want to check out more software, such as Flash Memory Toolkit, ASUS PC Diagnostics or AIDA64 Engineer, which might be similar to OCCT.