Yes, it definitely seems more commonplace to see the 45nm quads get to 500fsb. I got my hopes up before I bought this board reading carefully through Simp's guide to acheive 490-500 FSB on a q6600, but my CPU's capabilities clearly fell short of that which was a let down, particularly after spending quite a bit of time researching the best option. Going back to the P5Q-D seems to have proved (for me) that Asus' bios support for the MIIF is lacking, particularly now that I've been blending away for 8hrs at 459x8 with no increase in voltage, and could probably push for a few more MHz (which I will). I might even keep my hands on the P5Q-D and sell off the MIIF if results prove rewarding, which is definitely a big let down from Asus considering how much more I paid for it.