i am looking for a new board and dunno if asus rog's vrm will be able to hold the oc r7 1700 and gskill trident z rgb 3200mhz
i was gonna go for msi mortar b4
For now I recommend to buy the RAM no more than 3000mhz, if you can get the good deal, then go ahead to buy the 3200mhz, but run the RAM at 3000mhz, even you update the BIOS to the newer version, the beta 0803. https://www.asus.com/Motherboards/ROG-STRIX-B350-F-GAMING/HelpDesk_Download/
Even they released the newer bios with agesa micro-code, they still have problem, that is why they added the list of certified DDR4 memory for Ryzen. Check it out. http://www.pcgamer.com/amd-adds-to-list-of-certified-ddr4-memory-for-ryzen/