ok i flashed to latest bios >> 618
i can do around 600MHz FSB on air
it can be tuned to perform well but i don't think from what i've seen so far that it will really challenge Asus boards for efficiency
but it's not too bad
one thing that does concern me is the fact that NB voltage is directly linked with vFSB voltage and upping NB will also increase vFSB by the same amount
so when you add +0.5 you are getting 1.52v on vFSB..............if anandtech is right about vFSB killing CPUs your chips won't last very long at all if you put more than +0.5 into NB