I like ASUS boards, but its not only about MB, i have gold 1090T chip. 4300 MHz full stable in LINX with 1.478V, aircooled. Higher clocks are possible only for benchmarks, because I got error on some core (4314 MHz)
and what AMD at AIR and 5 GHz? Some guys was so close this magical point. I only 4820MHz (but only 1.55V at AMD), Chew* hit about 4950 MHz and MAD 4940 MHz.