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OCCT (OverClock Checking Tool) is the best software for testing system stability, diagnosing hardware issues, and monitoring performance. Whether you're an overclocking enthusiast, a technician, or just want to ensure your PC is running smoothly, OCCT provides a powerful suite of tools to push your hardware to the limit.

• Processor (CPU) – Evaluate your CPU’s stability and performance with various test modes.

• Graphics Card (GPU) – Push your GPU to its limits with DirectX and CUDA-specific stress tests.

• Memory (RAM) – Detect potential errors by putting your RAM under heavy load.

• Power Supply (PSU) – Simulate extreme power consumption to assess PSU reliability

  

With OCCT’s Stability Certificates, you can validate your system’s stability like never before. After passing a complete series of stress tests, receive a personalized, shareable certificate proving your hardware's robustness. Perfect for benchmarking, troubleshooting, or simply showcasing the performance of your setup.

OCCT includes a powerful monitoring system that tracks:
✔ Temperatures (CPU, GPU, VRM…)
✔ Clock speeds and voltages
✔ Resource usage
✔ Sensor data (fans, power consumption, etc.)

After each test, OCCT generates in-depth reports to help you analyze performance and detect potential hardware issues.

With a modern and easy-to-use design, OCCT is perfect for both beginners and advanced users.