I recently upgraded my FX5700 to a 6600GT. Very good improvement in PQ and obviously in sound reduction. However, if I try and use powerstip with this card it crashes. That is, all my PJ says is "Out of frequency" - I then reset and it does it every time, the only way I can get back to windows is by going into safe mode and uninstalling powerstrip. I don't mind not using powerstrip if I knew how to get 50Hz refresh rate on this card. I've messed in the card options a little and the refresh rate seems to be set at 60 and no other option to change it. Any ideas?