OCCT is the gamer's favorite app for stress testing their PC or Steam deck components and check for errors ! Find out if your latest crash is due to a hardware malfunction or yet another game bug, and see all monitoring and system information in an easy-to-use interface.

<h2 class="bb_tag" ><img class="bb_img" src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3515100/extras/50e47697d0baeac62d2f0658e294fc89.avif?t=1750757724" width=647 height=104 /></h2>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.<img class="bb_img" src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3515100/extras/39b7abced2eb188601d56694d01fda75.webp?t=1750757724" width=646 height=2 /><img class="bb_img" src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3515100/extras/3ca311a6435efec68afd2b4c1dfd54f5.webp?t=1750757724" width=646 height=29 /><ul class="bb_ul"><li>Processor (CPU) – Evaluate your CPU’s stability and performance with various test modes.</li><li>Graphics Card (GPU) – Push your GPU to its limits with DirectX and CUDA-specific stress tests.</li><li>Memory (RAM) – Detect potential errors by putting your RAM under heavy load.</li><li>Power Supply (PSU) – Simulate extreme power consumption to assess PSU reliability<video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3515100/extras/a8ea2bcd5ded190a6b6ba774484892ae.poster.avif?t=1750757724" width=800 height=472 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3515100/extras/a8ea2bcd5ded190a6b6ba774484892ae.webm?t=1750757724" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3515100/extras/a8ea2bcd5ded190a6b6ba774484892ae.mp4?t=1750757724" type="video/mp4"></video></li></ul><img class="bb_img" src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3515100/extras/39b7abced2eb188601d56694d01fda75.webp?t=1750757724" width=646 height=2 /><img class="bb_img" src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3515100/extras/71b9aba0e79dc111993887352f4906c4.webp?t=1750757724" width=646 height=29 />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.<video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3515100/extras/47c27b36cc95b665d6849f9eafd07f0b.poster.avif?t=1750757724" width=800 height=472 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3515100/extras/47c27b36cc95b665d6849f9eafd07f0b.webm?t=1750757724" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3515100/extras/47c27b36cc95b665d6849f9eafd07f0b.mp4?t=1750757724" type="video/mp4"></video><img class="bb_img" src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3515100/extras/cc119540ead62b1ff76767b35127ac5d.avif?t=1750757724" data-big-src=https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3515100/extras_big/cc119540ead62b1ff76767b35127ac5d.avif?t=1750757724 width=800 height=117 /><img class="bb_img" src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3515100/extras/39b7abced2eb188601d56694d01fda75.webp?t=1750757724" width=646 height=2 /><img class="bb_img" src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3515100/extras/f9244b2b7c77dc3bf723a6e35c80805b.webp?t=1750757724" width=646 height=29 />OCCT includes a powerful monitoring system that tracks: ✔ Temperatures (CPU, GPU, VRM…) ✔ Clock speeds and voltages ✔ Resource usage ✔ Sensor data (fans, power consumption, etc.)<video class="bb_img" autoplay muted loop playsinline poster="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3515100/extras/a4f78c225cdaacfa1ac741ea7dbe51ee.poster.avif?t=1750757724" width=800 height=472 ><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3515100/extras/a4f78c225cdaacfa1ac741ea7dbe51ee.webm?t=1750757724" type="video/webm; codecs=vp9"><source src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3515100/extras/a4f78c225cdaacfa1ac741ea7dbe51ee.mp4?t=1750757724" type="video/mp4"></video><img class="bb_img" src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3515100/extras/39b7abced2eb188601d56694d01fda75.webp?t=1750757724" width=646 height=2 /><h2 class="bb_tag" ><img class="bb_img" src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3515100/extras/011c9032b61db5fda3f07db6550afb83.webp?t=1750757724" width=646 height=29 /></h2>After each test, OCCT generates in-depth reports to help you analyze performance and detect potential hardware issues.<img class="bb_img" src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3515100/extras/39b7abced2eb188601d56694d01fda75.webp?t=1750757724" width=646 height=2 /><img class="bb_img" src="https://shared.akamai.steamstatic.com/store_item_assets/steam/apps/3515100/extras/ba8098f06f30edc7ee7376ef1deaa6c2.webp?t=1750757724" width=646 height=29 />With a modern and easy-to-use design, OCCT is perfect for both beginners and advanced users.

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OCCT Achievements