Overclocking my R7 1700 on my B450 board, and as a newb to overclocking Im VERY happy so far with the results. 

Stock voltages 3.7ghz all core no problem boots right up, Prime95 30 minutes no problem (have to run AIO at 100% fan speed, keeps temps right in the high 50c)

1.375vCore and 1.218 SOC 4.0ghz al core boots right up, need to reapply thermal paste (ran out when I put this build together and used a TINY bit of the kryonaut I had left...it works but got more on order now) as it crashes due to heat during stress testing.  I just tossed those numbers in - very please, hoping I have a golden sample here.

May do a full custom loop on this bad boy as well.