I got my Impact up and running yesterday. Everything is running pefect so far.
This is my first Asus system and at first I thought the debug led was giving me some error codes, between 29-35. Then I ran Aida stress test and I was getting a 50 code. But then I read the manual and figured out the led-display is actually showing the cpu temp while in windows. So that was a relief.
I'm going to set up a cpu waterloop, but the backplate to my EK Supreme HF is not compatible with the cpu socket backplate. I'll need to drill some holes, so it will be a while before that's up.
The only major issue I'm having is with Windows 8. I purchased it a few months ago, and apparantly I can only activate it on one computer. It simply tells me that it's already in use and I need to buy Windows 8 again. So all I can say is Microsoft sucks and right now i feel like just go pirat it.