Hardware calibration can only be performed on monitors that offered color gamut transformation functionality, such as BenQ PhotoVue monitors. You can hardware calibrate your BenQ PhotoVue monitor with calibrators from major manufactures, such as X-rite or Datacolor, and with BenQ proprietary software, Palette Master Element, for a calibration result best for BenQ PhotoVue monitors. There is no significant difference between software calibration and hardware calibration from an operating procedure point of view, but the underlying mechanism is very different. As stated in the previous paragraph, software calibration primarily adjusts basic parameters on source device graphics cards without changing anything on the connected display. Hardware calibration thoroughly adjusts internal display parameters and LUTs (look-up tables) on a much deeper level than software adjustments. Monitor parameters and LUTs are more complex than graphics card parameters, and so monitor hardware calibration takes considerably longer than software calibration. Still, the results are worth it and far more accurate than software calibration. In addition, hardware calibration offers color gamut transformation functionality so you can specify the color coordinates of the RGB primaries, and the monitor will be calibrated to the target.