I have E8400, Asus Maximus@Rampage 0902 bios, Kingston HyperX DDR2 1066@1100Mhz.
Computer can reach&stable at 8x550Mhz FSB with 0902 but it couldn't reach that high frequencies with the "new test bios" anymore.
And also as Alien Grey reported, I got very often "overclock failed" messege, and "black screen" at boot initialization