As was already mentioned previously Polaris bios editor will allow you to see all the values you want and compare bios's.
Check here: http://imgur.com/6QP6yif
The Sapphire is the upper one.
So, both have the same voltages and the same clocks.
Their diference is just that the Sapphire draws 1 A and 5 W less than the Asus Strix...
This minimal difference could not be handled by my PSU.
That is why i was discarting the temperature point you made.
No need to bash me.