2 polyluxx -Mazy be you selected higher voltage than your standard 3D voltage. Nothing to warry about if you don't get any crashes 2 Formula350 - No. I can not such changes in ATT to support independent clocks for cards. Design limitation. I'm not sure such changes ever will be in ATT for newest boards. X1xxx has a lot of good things to play with, but not HD 3/4/5 I already wrote about it. There are no way to actually detect is this AA from driver or implemented by game engine. And why you need preview? AA will looks different in different games. Limitation of driver itself. I don't use internal controller (in HD 5xxx) to override voltage, but MSI AB does it. Why not to use search before asking? I answered already. I think they does works with any CF, but can not be absolutely sure about it. I never tested them with Hybrid configurations. Can I assume you already tested ATT and something went wrong? If, yes. Tell me more.