Asus’ ROG Maximus XIII Extreme and Extreme Glacial are full-featured Z590 motherboards that include robust power delivery, premium audio with a DAC, five M.2 sockets, 10 GbE and integrated Wi-Fi 6E. The Glacial includes a custom waterblock. While pricing is tough to take, the Extreme ($899) and Extreme Glacial ($1499) represent what flagship-class motherboards should be.