OCCT - Hardware Stress Test

Please download OCCT which can be found here:

OCBASE/OCCT : Free, all-in-one stability, stress test, benchmark and monitoring tool for your PC

Depending on if you are running Windows or Linux there will be two editions.

Windows: When you launch the application, run it as an administrator, by right-clicking on the application and selecting Run as administrator.

Linux: You may need to change its permissions before the application is allowed to run.

Alternatively it would be easier to right click the file > Go to properties > Change its permission to allow it to execute on your system as a program. You can also run this application in the terminal.

Once loaded, you will see a screen like this...

You can monitor your hardware in real time.

OCCT is a very handy and useful tool to stress test your computer. If there are any hardware issues, it will either crash whichever test you are running or display a list of errors.

CPU

Select CPU and set the timer for 1-hour.

You can leave Mode set to Normal.

Load type set to Variable.

Start at Cycle set to 1.

Instruction Set on Auto.

Then click on the Start button. Wait 10-seconds and press Start again.

GPU

Select GPU (3D Adaptive) and set the time for 1-hour.

Select Variable for the configuration

Select your Dedicated Graphics Card.

Intensity Range | 20% to 100%

Intensity Increase | 5% Every 30 seconds

Then click on the Start button. Wait 10-seconds and press Start again.

GPU VRAM

Select VRAM and set the test for 1 Hour

Select your graphics card.

Set your memory to 80%

Then click on the Start button. Wait 10-seconds and press Start again.

Memory

Select Memory and set the system to 1 Hour.

Set Memory to 80%

Instruction Set: Auto

Threads: Auto

Then click on the Start button. Wait 10-seconds and press Start again.

Power

Select Power.

Under Use all GPUs select Enabled and run this test for 15-minutes.

Then click on the Start button. Wait 10-seconds and press Start again.

Please report the results to your support technician if there are any issues with the test or concerns you may have.

Updated 9/23/2025