MSI Afterburner vs nvuv

MSI Afterburner is Windows software for tuning graphics cards and monitoring hardware in real time. Its controls cover GPU clock frequency, voltage, power limits and fan speed, and users can set fan curves and save tuning profiles. MSI says it works with graphics cards from all brands, not only its own. OC Scanner can find the highest stable overclock settings for a card. While gaming, an on-screen display can show live system performance information. The page also describes Predator, a separate recording tool for games or overclocking that supports H.264, WMV and AVI formats. MSI lists a free plan at free, with overclocking and undervolting, hardware monitoring, custom fan control and an on-screen display. There is no free trial. MSI lists versions 4.6.6 (Final) and 4.6.7 (Beta), both released in September 2026. It warns that phishing sites may steal data and identifies msi.com and Guru3D as the correct sites.

nvuv is a free Linux command-line utility for adjusting NVIDIA GPU power and clock behavior. It can set power limits, lock GPU or memory clock ranges, and apply offsets to either clock. On systems with several GPUs, the `-i GPU_INDEX` option chooses the device. The project describes nvuv as a thin wrapper around NVIDIA’s NVML library. Its indirect undervolting method locks the GPU’s maximum clock and applies a positive offset because direct voltage control is not exposed on Linux. The project says this can preserve roughly similar performance while lowering voltage and power draw, with possible reductions in temperature and fan noise. Settings may come from a TOML file, using `/etc/nvuv/nvuv.toml` by default. Applying, changing, or resetting settings requires root privileges. Changes do not survive reboot, resume, or driver reload unless the supplied systemd service reapplies them. That service can run at startup and after resume or driver reload. Downloads are linked through GitHub releases and an Arch User Repository package. nvuv uses Apache License 2.0 WITH Commons-Clause-1.0.