Hi Ray, First off I'm using a 5770 with Windows 7 x64, Catalyst preview 10.3 and ATI Tray Tools v126.96.36.1992. My issues is that when the auto-overclocking feature loads my 3D settings it loads the fan as auto. The fan is set to 100% and included in the 3D profile. I've re-saved it numerous times to double check and reselected it in the auto-overclocking option numerous times to double check there too. If I load the 3D clock speeds manually it correctly sets the fan to 100% so it appears the issue may belong with the auto-overclocking feature. I wouldn't normally bother but BF:BC2 likes making my system nice and toasty, especially my 5770, taking it up to 85C which is around 15C higher than any other game. I look forward to your reply. Many thanks.