Download OCCT 17 (x64) for free. This hardware stability test program checks your CPU, GPU, RAM, and PSU, displaying temperatures, voltages, and real-time test results to help you prepare your system for heavy use.

What is OCCT?

OCCT This is the ultimate tool for testing the stability and detecting abnormalities of computer hardware, trusted by experts worldwide. The program is designed to subject critical components to maximum processing load, including the CPU, GPU, main memory, and even the power supply, to detect potential weaknesses and defects. Unstable hardware often freezes or shuts down when subjected to heavy workloads. Testing with this program is therefore essential for those who want peace of mind regarding long-term performance.

For those who love overclocking to push performance to its limits, this program acts as an indispensable safety checkpoint. Its intelligent sensor system closely monitors temperature, voltage, and fan speed in real-time. If the temperature exceeds the set limit, the program will immediately shut down to prevent damage to critical components. The system can detect errors at the microsecond level, which is crucial for fine-tuning the speed and voltage of the graphics card and system memory for optimal compatibility.

This accurate verification can also be integrated with programs such as... HWMonitor Pro To compare heat values and comprehensively evaluate the performance of the cooling system, the easy-to-read data graph interface allows us to accurately analyze the root causes of computer problems. Whether the computer is used for demanding gaming or video rendering, pre-testing helps ensure stable system operation and prevents annoying blue screen errors.

Key Features

Create simulated tasks to test the stability limits of the central processing unit (CPU).
A tool for checking the durability of the graphics processing unit (GPU) and VRAM memory.
Supports power supply testing to verify power delivery under heavy load.
Real-time sensor alert system with temperature and voltage monitoring.
The system automatically shuts down when the hardware temperature exceeds a safe level.
It can detect microsecond-level errors that cause blue screen errors or system freezes.
The interface displays performance results through data graphs, allowing for clear statistical analysis.
Supports generating a test results summary report after the process is complete.
It functions as a portable program and does not require installation on the operating system.
The sensor database is continuously updated to support the latest computer components.

What's new?

Improvements in version 17.1.5

Ported the dependency cleanup performed previously on the reverted UE 5.7 upgrade
Fixed a bug where the Custom intensity value in Steady mode would be displayed at 0 in the execution tab

Additional details