Got my 2 this morning, heat is NOT an issue, at least not for me.
I ran it through the STALKER COP bench and Unigine and I hit 82c max (this is before I even bothered with the fan profiles).
One thing that is annoying is that whenever I get to the processor part of Vantage (CPU Test 1/AI Test) I get a win32k.sys BSOD. It's the only issue I've had so far.
I'm now running it at 70% fan through the profiles in Afterburner and I don't go over 78c in AoC. That's in over 30 mins of playing