AMD Radeon HD 7770 XT 1GB Graphics Card Review

To test power consumption, we monitor the overall power of the system through a plug-in electricity usage monitor at an idle and load state. This allows us to show the fluctuation between how much power draw the graphics card takes at idle and at load. By monitoring the overall usage of the whole system, it gives an easy comparison if you wish to do the same yourself as opposed to buying very expensive individual testing equipment.

With the higher stock clock speeds and fairly impressive results that we have seen from the card in comparison to what we have seen from the 6800 series cards in the past, on average the 7770 XT uses 20-30w less power at both idle and load with the utilisation of AMDs ZeroCore technology.