Reflecting on how to deal with Radeon HD 4890 OC? Well it looks like perfectly. One of our compatriots, “Xoqolatl,” using dry ice, proved that the RV790 is achieved even at 1.2 GHz GPU at improving the standard voltage of 1.3V to 1.45V.

The results could be obtained by using RivaTuner, because normally the manufacturer has limited the possibility of exceeding the limit of 1 GHz and increase the GPU voltage.