GPU Auto Optimizer v0.4.3

Warning

Do not use this version; use 0.4.4. On a card where the bandwidth measurement does not work, the memory search of 0.4.3 can climb until the PC freezes. That happened on an RTX 3080 Ti.

This is a pre-release for testing. The app does not offer it as an update; it is here for a card on which no run could start. It has passed the automated tests, and has not run on a graphics card yet.

Fixed

• No run could start on a card that gets hot at stock: the card is not stable at stock (TOO HOT). Every run begins by measuring the card at stock, with the fans left to the NVIDIA driver. On some cards the driver lets the card reach 85 °C under full load (an RTX 3080 Ti Founders Edition did, with its fans at 65 %). The app took that for an unstable card and stopped, whatever fan curve was chosen for the run. Now the measurement still stops at 85 °C, what it measured is the "before" of the result, the card cools for up to a minute, and the run goes on with the fans on the profile's curve.
• The undervolt search left the fans to the NVIDIA driver while it stopped at 75 °C, which such a card cannot meet. The search now keeps the fans on the fan curve in use, as the overclock search does, and the app's fan control is on afterwards, as after every other tune.

Installing

Download the zip below, unzip it and start GpuAutoOptimizer.exe. Answer Yes when it offers to replace an older copy in the tray. Close MSI Afterburner and other programs that set clocks or fans first.

Known

• Whether the fans at 100 % keep a card like that below 75 °C at stock power is not known. The overclock profiles lower the power limit when they do not; the Undervolt profile cannot, and may still stop with TOO HOT.
• The executables are not signed. Windows SmartScreen may warn at the first start, and a detection by an antivirus program cannot be ruled out; if you see one, please open an issue.
• Tested on one PC: an RTX 4070 with driver 617.42. This version has not been run on it yet.