Just got my Asus card. Have to say the packaging looks classy! Even comes with a leather mousemat lol!
Anyway I have just tried to find the max stable clock on stock voltage (1.312V), and it seems to be 935MHz which is quite impressive tbh. Not tried messing with memory or voltage yet. Soon the card will be under water with a nice VRM cooler and we'll see what she can really do.
Not bad for straight out of the box! Another thing to note is that the cooler seems identical to the 4870 reference, but GPU temps seem to be much improved. Idles are still not that impressive (high 50s), but it was staying 65ish under load which is not bad at all.