I was pleasantly surprised when my open box BioStar X370GTN mITX motherboard arrived today. I had no problem getting my Corsair Vengeance DDR4-3000 to run at 2933. My previous ASRock B350 boards wanted to run it at 2666.
- First BIOS is meh
- 2nd BIOS is the best for stable 3200 and some other things, no issues at 3200 14-14-14 1.35V but can't set higher memory clock
- 3rd BIOS ( the latest one ) is meh, can set more than 3200 but even 3200 has stability issues, they also removed P-states and is harder to OC/have to set higher voltage for the same frequency as on older BIOS, no way to undervolt CPU, it runs at 1.35V or above, offset is only +, no LLC so you end with 1.45V when you set 3.9GHz+
On all BIOS releases there is no problem to set 2933. Problems are starting at 3200 while new AGESA supposed to let it work at higher clock than 3200. Last BIOS has already 3 months. Biostar support ignores most mails and they only replied once about 4 months ago before new AGESA release ... it still took them 2 months longer to release BIOS with new AGESA than other brands and it's worse than the older BIOS but they can't see any issues.
I had no issues with DDR4-3200 on my memory kits just after premiere while testing 3 different motherboards ( ASUS, GB and Biostar ). However XMP was not working in most cases. I've seen many users complaining but most of them didn't know how to set their memory manually. Compatibility issues were ( and still are ) related to the timing tables in SPD/XMP profiles. Some mobo brands improved that while some did barely anything.
As usual the most issues after premiere were with Corsair memory. It was fixed for most brands in ~2 months after premiere. G.Skill on some motherboards still has issues with their dedicated Ryzen memory kits but manual settings work without issues.
I had no issues at all with Kingston Fury ( Ryzen series ) and any of the Crucial memory kits. Actually on all my Ryzen boards, Ballistix Elite was working the best ... better than TridentZ even though both have the same IC.