4x shappire R9 280x vapor-x GPU 0 always faster than GPU 1 2 3 ?? memory swap 40 gb have 3x bios 015.42, elpida 1x bios 015.41 hynix. Does anybody have an idea? Asrock 970 extreme4 all stock, can not use any amd tool, it says driver not installed.... Driver install many time, ok in windows. use tech power gpu z amd monitor no info
