The name OCCT comes from OverClock Checking Tool. This application will let you benchmark and overclock your system components. OCCT is the most popular all-in-one stability check and stress test tool available.

It generates heavy loads on your components while checking for errors, and will detect stability issues faster than anything else. OCCT embeds HwInfo's monitoring engine to get precise readings and diagnose issues faster.

Features

  • Up to 16-core support ( for instance, up to a Quad-Kentsfield or an Octo-Conroe )
  • Customizable tests ( Duration, Priority, CPU or RAM, ... )
  • CPU and Motherboard detection
  • Monitoring support through 3rd party application ( i.e. MBM5, Speedfan and Everest Ultimate Edition 3.50 or above )
  • Can produce graphs showing temperature and voltages during the test : Unique feature !
  • Multi-language support

Don't let your work go to waste

Ensure your computer is stable before working on your beloved projects - don't let a reboot or memory corruption put your hard work to waste

Is this a game bug or my computer?

Find out by stress-testing your components. If anything's wrong, OCCT will pick it up and tell you ! By having a wide-range of test integrated, you'll be able to pinpoint which one is faulty.

Stop wasting time with after-sale services

Find out which component is faulty and gain time by giving after-sale services proof your hardware is faulty. I don't promise you it'll go smooth, but at least, you'll have backup.

Modern monitoring dashboard

Create easy-to-read, attractive monitoring dashboards showing how your component is behaving in real-time.

Check your cooling

OCCT test will make your components go all out. If anything is wrong with your cooling, you'll quickly know.

The ultimate CPU test

OCCT's CPU test gives you full control on which core is tested - Cycle through cores, know which one generated an error, invert them... Lots of fun there.

Squeeze every MHz of your components

OCCT will help you pinpoint ideal values for your overclocked components and ensures rock-stable day-to-day usage.

What's New

  • Fixed: An exception may occur if your system had no 3d-capable GPU
  • The language translation option is now properly hidden again
  • Fixed: There's no constraint on the minimum interval when loading OCCT's settings anymore. The newer timer used doesn't allow concurrent refreshes, so the minimum refresh time doesn't have to be constrained anymore
  • Fixed: The enterprise edition would sometimes refuse to start if your CPU had more than 32 cores
  • Both the UI and the Command-line version will have an exit code corresponding to the test status (only if --auto-close is used for the UI edition). Codes are as follows : Finished = 0, Cancelled =1,Overheat = 2,Crashed = 3,ErrorFound = 4, WheaErrorFound = 5
  • Fixed : OCCT would not properly close if no test was launched prior
  • UI:The cursor will switch to wait status while OCCT's cleaning up before closing
  • Main. Fixed: When a WHEA error was detected and no compute error, the text status would still say "no error(s) detected". They properly appeared in the test log, and the indicator was yellow as intended, but this led to confusion.
  • SysInfo. Added: Serial number reporting for Memory modules
  • SysInfo. Fixed: When no GPU was detected, the intended message didn't show up
  • Benchmark. Fixed: an issue was rarely preventing the benchmarks from finishing properly
  • MemoryBenchmark. Fixed: The summary did not display the current benchmark running
  • Report. Fixed: The test status in the PNG report for the personal edition was not reflecting the last test run
  • Enterprise. Fixed: Serial numbers for Memory were missing from the json and HTML report