Nvidia GPU overclocking on Linux

sudo nvidia-xconfig --cool-bits=4

Option “Coolbits” “integer” enables various unsupported features on certain nVidia graphics cards, such as support for GPU clock manipulation in the NV-CONTROL X extension. This option accepts a bit mask of features to enable.

    WARNING: this may cause system damage and void warranties. This utility can run your computer system out of the manufacturer’s design specifications, including, but not limited to: higher system voltages, above normal temperatures, excessive frequencies, and changes to BIOS that may corrupt the BIOS. Your computer’s operating system may hang and result in data loss or corrupted images. Depending on the manufacturer of your computer system, the computer system, hardware and software warranties may be voided, and you may not receive any further manufacturer support. NVIDIA does not provide customer service support for the Coolbits option. It is for these reasons that absolutely no warranty or guarantee is either express or implied. Before enabling and using, you should determine the suitability of the utility for your intended use, and you shall assume all responsibility in connection therewith.

    When “2” (Bit 1) is set in the “Coolbits” option value, the NVIDIA driver will attempt to initialize SLI when using GPUs with different amounts of video memory.

    When “4” (Bit 2) is set in the “Coolbits” option value, the nvidia-settings Thermal Monitor page will allow configuration of GPU fan speed, on graphics boards with programmable fan capability.

    When “8” (Bit 3) is set in the “Coolbits” option value, the PowerMizer page in the nvidia-settings control panel will display a table that allows setting per-clock domain and per-performance level offsets to apply to clock values. This is allowed on certain GeForce GPUs. Not all clock domains or performance levels may be modified. On GPUs based on the Pascal architecture the offset is applied to all performance levels.

    When “16” (Bit 4) is set in the “Coolbits” option value, the nvidia-settings command line interface allows setting GPU overvoltage. This is allowed on certain GeForce GPUs.

    When this option is set for an X screen, it will be applied to all X screens running on the same GPU.

    The default for this option is 0 (unsupported features are disabled).

Even more information can be found here on nVidia’s website.