aticonfig --od-gettemperature

Default Adapter - AMD Radeon HD 7800 Series
                  Sensor 0: Temperature - 50.00 C
aticonfig --od-getclocks

Default Adapter - AMD Radeon HD 7800 Series
                            Core (MHz)    Memory (MHz)
           Current Clocks :    1100           1250
             Current Peak :    1100           1250
  Configurable Peak Range : [300-1050]     [150-1450]
                 GPU load :    99%