Upgraded from a i7 7700k. This thing is quite the beast, no issues! Motherboard took my 32gb of RAM no problem with XMP, will look into overclock these Samsung B-DIE's soon but as for now I'm not to worried, I bought very good low latency RAM that is known to work well with Ryzen.
My cooling setup keeps my processor below 35c at idle and under 70c at max load.
Really enjoyed building this, The Meshify-C is a joy to build in.