Yes ,,, it will ,,, you dont need to update the BIOS for it
(you need to unlock it thou if you want multi other than 11... unless you have a locked one (only 11 multi))
Just make sure you have proper cooling for the NB
(if you havent checked already)
Look at the AMD.com forums for info ... (search Abit forum)
I had my barton in my KX7-333
was running 11.5 x 189.9 ....
But ,,, I have my XP2600 in it right now ...
at 12 x 189.9 with 1.8v