MSI z170a Krait 3x

Well, bios says my motherboard temp is 32c, cpu temp is 22c, but my room temp is about 70-72f.

I guess my concern is, it seems to be accurate when doing stress tests. Everything ells with the pc seems to be working fine. I just wonder if "low idle temps" would be worth RMA'ing the motherboard.

Edit: or would this even be a mb problem. Could it be a cpu problem. How could I figure that out?