Ok this is a new site to me atleast.
http://cxzoid.blogspot.com/2015/06/asrock-970m-pro3-review.html
What I like about this review is the detail on the problems with this board. For example:
"This board doesn’t officially support the 9000 series of FX CPUs. The fact that none of the components making up the VRM phases are from name brands is concerning. However, the BIOS does limit you to only using safe voltages from which I calculated that the VRM is most likely built for 120A on the core and 30A on the NB. Honestly this board annoys me because building a small high current VRM is not hard. The only obstacle is the expense, and considering how many AM3+ boards cost more than this one I don't think that putting a 160A, 200A, or 240A VRM on this board would make it less desirable. However cheap the VRM may be, it holds voltage very well. The board doesn't support LLC, but at any core voltage while running IBT, I wasn’t getting more than 15mv of VDroop. This is better than what any other board I've used has ever managed."
Most AM3+ boards tested and reviewed are top end (ie expensive) 990 boards. It is nice so see such a cheap board reviewed. I own this board with an 8320e. On Prime95 it shows less then 80 watts in HWmonitor at stock.