CapFrameX

CapFrameX is an open-source benchmarking tool that captures and analyzes frame performance data using Intel's PresentMon as its underlying capture engine. It calculates detailed metrics like frametimes, FPS values, median frame rate, and low percentile figures, then displays an in-game overlay during test runs through integration with RivaTuner Statistics Server. Built for enthusiasts and reviewers who want more rigorous benchmarking than a simple FPS counter, CapFrameX turns raw capture data into readable reports and includes educational content explaining what frametime and percentile metrics actually mean. It is free to use, with the project accepting optional donations, and its source is publicly available on GitHub.