Max recommended package (CPU) temp is 72C, so unless it got to that, it's perfectly fine. Also, the absolute max core temp is 98C (it'll throttle at that temp), so 60's and even lower 70's is OK. It's actually fine to go a bit over 72C, you just don't want to be in the mid to upper 80's and above for long periods.
And the mobo shouldn't have anything to do with the CPU temps. I wouldn't have gotten that board myself with that CPU, but it's not because of anything heat related. Just because you can't OC with it and it's a "K" CPU that's pretty much made to OC.