Here is a 9 Phase Power Phase Design MATX board . The $15 rebate also works with the ATX board Pro4 version as well.
Asrock MATX Pro 4 – $64.99 (After MIR with review)
https://www.newegg.com/Product/Pr…6813157762
Asrock ATX Pro 4 – $74.99 (After MIR with review)
https://www.newegg.com/Product/Pr…6813157761
Asrock MITX Pro 4 – (One Day…)
Rebate information and instructions link: (Ends April 30, 2017)
http://www.asrock.com/events/usre…g-AM4-Apr/
I been waiting forever for this board and I had a lot of issues with my current B350M =)!