Been helping my cousin after he purchased the Asus Striker II Formula and what a fucked up piece of shit that is.
7 Bios updates for starters, is compliant with 8500 memory sticks, but only after you sacrifice a gnome, call the tech services in germany(who speaks shitty engrish), and flip the bios upside down.
After initiale problems we called the store he had bought it from and they confirmed it had Q9450 support. Well, apparently it didn't. Doesn't want to recognize the CPU on any level and after 30 seconds of being on its running around 60c. So we consulted Asus website but without finding hard evidence that it supported the Yorkfield chip. Finaly my cousin in frustration cracked down and called Asus Tech in the UK, they said that the board did indeed support the Yorkfield, but only the QX9650 and QX9750 versions.....

The tech idiot did say that their working on a bios update for the q9450 and q9550 processors but the current scheduel for that release isn't set yet and could possibly first be available in the new year.....
Bottom line:
Asus has shit support, shitty website, ultra crappy products(have personally had 2 Asus boards burn out after 4 months +/- on each.
I advice anyone to make a point of avoiding Asus motherboards.