I have the same set up with a lower video card xfx 6770, but I really like the set up. Asus mobo worked flawlessly out of the box and by using the built in overclock in the easy bios the fx is at 3.8 with one button push. Have not stress tested it yet, but she runs cool and very stable. Only problem is ram, there is a list of brands and model numbers you should pick from to keep from having issues with the mobo. I got 8 gb of corsair vengeance 1866 off the list and no issues there. I did just update the bios and seems to run even better, but she ran just fine before. I hope this helps!
Just pull up the list off of the Asus web site, its a PDF called the QVL, or Qualified Vendor List. Its broken down into speed so get to the 1600 list and see if its on it. I would really check first before you build. If nothing else just to keep from getting frustrated when all you want to do is build the computer. ..