Enter —the non-installed, USB-ready version. But unlike many popular portable apps, FurMark Portable exists in a grey area: it is not officially endorsed by Geeks3D (the developer) in the same way as the installer, yet it is widely distributed.
However, there is a workaround that technically yields a portable version: You can run the official installer with command-line switches to extract the files without touching the registry: furmark portable download
This article dissects everything: where to get it, how it works, the security risks (including miner malware), and how to build a truly safe portable version. FurMark Portable is a repackaged or self-contained version of Geeks3D’s FurMark that does not require administrative privileges or write to the Windows Registry (except for GPU driver interactions). Enter —the non-installed, USB-ready version
FurMark.exe /nogui /max_time=60000 /max_temp=85 /log=furmark_log.txt This runs a 60-second test, aborts at 85°C, and logs results. If security is your primary concern, consider these truly portable GPU stress tools: FurMark Portable is a repackaged or self-contained version