About this resource

What it does
OCCT is PC stability-testing, monitoring, and benchmarking software with workloads for components such as the CPU, GPU, memory, and power delivery.

Stress-test warning
Its tests can create sustained high temperature and power demand. Monitor thermals, avoid unattended runs, and stop when readings are unsafe or the PC becomes unstable. Do not use a stress test as the first response to a system already overheating.

Use results in context
A reported error can help narrow a fault, but it is not a definitive diagnosis by itself. Combine it with driver checks, event logs, and hardware-specific tests.

Official resource
OCCT

Original resource notes
A Crucial augmentation to Prime95 for OC stress testing.
Author
William B
Downloads
6,967
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13,652
First release
Last update

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Latest updates

  1. Version 16.1.11

    New stable OCCT 16.1.11 found on the official OCBASE download page, dated 6/10/2026. Official...
  2. Version 15.0.13

    Newer stable OCCT version found: v15.0.13 (dated 12/24/2025 on OCBASE download page). Release...
  3. Version 13.1.15

    The latest stable version of OCCT is 13.1.15, released on March 3, 2025. You can download it...