This package wraps the AMD Display Library 3.0 [1] using ctypes. You do not need to install the SDK to use this package, and no compilation is required.

WARNING! This software can damage or destroy your graphics card if used incorrectly.

Usage: atitweak [options]

Options:
  -h, --help            show this help message and exit
  -l, --list-adapters   Lists all detected and supported display adapters.
  -s, --status          Shows current clock speeds, core voltage, utilization
                        and performance level.
  -e ENGINE_CLOCK, --set-engine-clock=ENGINE_CLOCK
                        Sets engine clock speed (in MHz) for the selected
                        performance levels on the selected adapters.
  -m MEMORY_CLOCK, --set-memory-clock=MEMORY_CLOCK
                        Sets memory clock speed (in MHz) for the selected
                        peformance levels on the selected adapters.
  -v CORE_VOLTAGE, --set-core-voltage=CORE_VOLTAGE
                        Sets core voltage level (in VDC) for the selected
                        performance levels on the selected adapters.
  -f FAN_SPEED, --set-fan-speed=FAN_SPEED
                        Sets the fan speed (in percent) for the selected
                        adapters.
  -d, --set-fan-speed-default
                        Resets the fan speed to its default setting.
  -A ADAPTERLIST, --adapter=ADAPTERLIST
                        Selects which adapters returned by --list-adapters
                        should be affected by other atitweak options.
                        ADAPTERLIST contains either a comma-seperated sequence
                        of the index numbers of the adapters to be affected or
                        else contains the keyword "all" to select all the
                        adapters. If --adapter is missing, all adapters will
                        be affected.
  -P PERFORMANCELEVELLIST, --performance-level=PERFORMANCELEVELLIST
                        Selects which performance levels returned by --list-
                        adapters should be affected by other atitweak options.
                        PERFORMANCELEVELLIST contains either a comma-separated
                        sequence of the index numbers of the performance
                        levels to be affected or else contains the keyword
                        "all" to select all performance levels. If
                        --performance-level is missing, all performance levels
                        will be affected.
  -p POWERTUNE_LEVEL, --set-powertune=POWERTUNE_LEVEL
                        Sets powertune level (between -20% and 20%) for on the
                        selected adapters.

Reference

AMD Display Library 3.0 http://developer.amd.com/sdks/adlsdk/pages/default.aspx