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OCCTMSI Kombustor
Freemium

Free for individuals, with offerings for professional and business use.

 Free

Freeware from MSI and Geeks3D.

Windows, Linux Windows
  • Stress testing, benchmarking and monitoring in one tool
  • Free for individual users
  • Heavy GPU load for stability and thermal testing
  • OpenGL and Vulkan tests
  • Closed source
  • Professional use is a separate offering
  • Closed-source freeware
  • Extreme load can push poorly cooled cards hard
Downloadable app Downloadable app
Closed source Closed source
License not stated License: Freeware
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked September 23, 2026

Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.