Nice looking board.
good to hear they fixed the memory problems the other gene had.
Im not sure why they are pushing The sound hardware so much i guess their really isnt much innovation to toute otherwise.
I think it was Linus that did a Large Blind Sound test with a pile of high end sound cards and onboard sound mixed together and the testers couldn't even tell the difference between them.
So you can see why i look at all these fancy "Innovations" to sound to be a little silly and mostly just marketing mubo jumbo but what ever at least people will know their onboard is great also and wont feel that pressure to buy a soundcard.
They added back PS2 also which is smart for a OCing board as i think we have all had issues where USB will just stop working on a install or something and you need that PS2 to reinstall the USB connectors or get past that issue so the drivers can install. smart for asus to re add that.
Its surprising they can even make the memory run faster since the IMC on the CPU controls that portion of things wonder what kind of voodoo they are using to pull that off? perhaps just better Timings lists for the sub timings ect.
I know with my nick shi profiles on my Asrock OC Formula i have never had issues running my mem @ 2666mhz with high oc's on the CPU.
and Haswell is supposed to have even better IMC so its odd to see you having those issues.