As some of the other users have mentioned, I've noticed huge issues with the internal Wifi on this build. Connecting to the wireless router hangs for quite a while, then asks me to re input the password (I know it's right because my Edimax Dongle uses the same Network profile). If I can get it to connect it will drop out, which should not be happening with a 1.5W Amplifier on an ASUS AC66R.
All these issues have been resolved with the External Edimax Dongle.
Overclocking is insane, I'm running a Rebirth model... At get this-- 1000Mhz with headroom to go. (That's Like 68%!!!) I'm talking stable as a rock, Even with a Neon SIMD accelerated Stress test running and In browser HTML5 benchmark at the same time.
In addition, I've noticed SuperTuxCart no longer works for me either after update. Might be an unrelated issue, but tested without overclock with same results.