Crossfire AMD Radeon

If you run a crossfire set up and play a game that doesn't support it what will happen? will it just not launch or will it be unplay able. If it matters im planning on using rx 570/8gb in crossfire

Is it possible to crossfire a rx 570 8gb from xfx and a rx 480? If you can are there any draw backs?

Does anyone know which GPU could I use for a crossfire? I just presume I could use another R9 200, but I can't find one anymore... Thanks a lot! Processor: AMD-FX 8320 Motherboard: Gigabyte 970A-UD3P

Why Can't CrossFire RX580-570 No Crossfire On/Off AMD Radeon settings Thank

hi I've just upgraded my gpu from a GTX 760, in which I was getting 80-120 fps in ultra on world of Warcraft, to a MSI R9 290 and my fps has reduced and is around 40-70 fps now. am guessing its maybe some sort of application settings in CCC but don't know what to change. help please :D