Last month, we released the first beta of OCCT v17, introducing one of the biggest evolutions in OCCT's history: a completely redesigned and fully modular Memory Test.
Today, we're rolling out the second and last phase of the v17 beta update, bringing major optimizations and quality-of-life improvements across the entire application. From significantly faster startup times and reduced memory usage to improved crash recovery, this update focuses on making OCCT faster, lighter, and more stable.
And because we're incredibly excited to see what the community can build with the new Memory Test system, we're also launching a contest where 3 lucky winners will receive 3 years of OCCT Supporter Edition (more details below).
The first OCCT v17 beta last month introduced a full redesign of the Memory Test, rebuilt entirely from scratch around a highly modular architecture.
Currently, the new system includes 16 different testing blocks that can be freely combined to create highly customized memory stress tests. This makes the new OCCT Memory Test one of the most flexible and customizable memory validation solutions available.
You can read more about the new OCCT Memory Test in our detailed blog post.
Optimizations and Quality-of-Life Improvements
In this second wave of the v17 beta, we focused heavily on performance, reliability, and overall usability. Here are some of the key improvements included in this update:
FASTER STARTUP TIME - We wanted OCCT to be faster from the very start, so we have built a brand-new launcher. While you may not notice visible interface changes, internal testing shows startup times improved by approximately 10% to 30%.
LOWER MEMORY USAGE - Reducing OCCT's resource consumption has always been a priority, especially for stress testing scenarios where system resources should remain available for the workloads being tested.
With v17 Beta, overall memory usage has been reduced by approximately 15% to 30%. In addition, monitoring data is now written directly to disk, further lowering memory usage mid-certificate.
IMPROVED GUI RELIABILITY - To increase reliability when running OCCT from USB drives, external storage, or network locations, parts of the application will now reside in the system's temporary folder during execution.
MORE RELIABLE AUTO-UPDATES - Keeping OCCT updated is essential to ensure users always have access to the latest fixes, optimizations, and testing features. For v17, the update process has been reworked to improve reliability.
IMPROVED CRASH RECOVERY AND SAVE STATE SYSTEM - To improve post-crash diagnostics, we have significantly enhanced OCCT's “Save State to Disk” functionality. OCCT will now preserve the latest known application state more reliably, making it easier to investigate failures and understand the system conditions leading up to a crash or freeze.
Win 3 years of OCCT Supporter
To help grow the new Memory Test ecosystem, we're looking to integrate more community-created presets directly into OCCT. And to encourage experimentation, we are currently hosting a community contest on our Discord server.
Participants can download OCCT v17.0.0.b11 where the free version’s Memory Test duration limit has been temporarily removed, giving everyone more freedom to design advanced testing scenarios.
Here's how to participate:
Create your own Memory Test preset
Share it in the memory-test-presets section on Discord
Submit your preset before June 22, 2026
Our team will select the 3 best presets, which will then be officially integrated into OCCT. The creators of the selected presets will each receive 3 years of OCCT Supporter Edition.
We genuinely cannot wait to see the kinds of creative and powerful tests the community comes up with!
As with every beta release, community feedback remains extremely important to us. If you encounter bugs, stability issues, unexpected behavior, or simply have suggestions for improvements, feel free to reach out through our contact form or join the discussion on our Discord server.
