Userbenchmark offers a free version of its testing software, but only a limited number of users can test for free at any given time. If no slots are available, users must sign up for a paid Pro account to use the app. Users have to complete a 3D captcha minigame when there are free slots.
Userbenchmark has been criticized for its biased reviews towards AMD CPUs and GPUs. However, it wasn’t always like this as it had even-handed opinions towards AMD for years before it reacted against the high performance of AMD’s Ryzen 3000 CPUs.