RivaTuner is a complete powerful tweaking environment, providing you everything you may need to tune NVIDIA GPU based display adapters. The widest driver-level Direct3D / OpenGL and system tuning options, flexible profiling system allowing to make custom settings on per-application basis, both driver-level and low-level hardware access modes, unique diagnostic and real-time hardware monitoring features and exclusive power user oriented tools like built-in registry editor and patch script engine make RivaTuner's feature set absolutely unmatched. RivaTuner supports all NVIDIA display adapters starting from Riva TNT family up to the latest GeForce series and widest range of NVIDIA drivers starting from the oldest Detonator 2.08 up to the newest ForceWare drivers family. In addition to complete NVIDIA hardware support, RivaTuner also provides support for display adapters based upon newer ATI graphics processors. All RivaTuner's features besides driver-level tuning options are also available on supported ATI hardware.

For novice users, we have a guide to help you through Rivatuner and setup fan speeds and overclocks on your graphics card. This guide will hopefully help you understand how to use the features that Rivatuner provides.

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Version 2.21:

Minor bugfixes:

• FOURCC INTZ and RAWZ formats are no longer forcibly disabled on GeForce 6 and newer display adapters when closing the 'Textures' tab in Direct3D tweaks dialog. Please take a note that these formats are required for proper GTA IV functionality, so if you experience problems with missing textures in this game on NVIDIA GeForce 6 and newer display adapters then please try to open the 'Textures' tab and press the 'Defaults' button. 
• Fixed 'Restore after suspended mode' option in low-level fan control tab, corrupted in the previous release due to multi-GPU related core changes.

What's new:

• Updated databases for Detonator and ForceWare drivers. Added databases for ForceWare 180.60, 180.70 and 180.84.
• Added Catalyst 8.12 driver family detection.
• Added 'Enable FOURCC INTZ surfaces' and 'Enable FOURCC RAWZ surfaces' options to the 'Textures' tab of the Direct3D tweaks dialog.
• 'Restore after suspended mode' option in low-level fan control tab is multi-GPU oriented now. Now the option affects all display adapters in the system instead of currently selected display adapter only.
• 'Allow separate 2D/3D clock frequency adjustment' option is no longer provided when enabling driver-level hardware overclocking. The option is now hidden to reduce the amount of false bugreports posted by the beginners trying to disable 2D/3D clock frequncy then claiming that the hardware stays at extremely low boot clocks. Power users can still control this option via AllowMaxPerf registry entry.
• Extended list of detectable supported FOURCC formats in 'IDirect3D9 HAL adapter formats' diagnostic report category.