All of what Mega Man said above.
And maybe some of this, note in my sig I use an Antec SpotFan on the VRMs. I also use a Corsair H110 closedloop cooler, which probably contributed to my "warped" UD3. I did not have the spotfan on my UD3 VRM's. When I rebuilt my system with the Sabertooth, I put an 80mm fan on the backside of the mobo to cool the cpu VRM area. I have zero heat problems now and have been running 4.6 ghz on my 8350.
I'm really not trying to "slam" Gigabyte. It's just that the UD3 boards won't hack a reasonable overclock with a 8 core processor and liquid cooling. The why of it doesn't matter to me, I went Sabertooth to solve the problem.
Again, All of what Mega Man said above...