Hi - I built an AM2-based comp a yr ago. MB is Asus M2n sli deluxe. Processor has been AM2 5200. Now that processors have advanced and prices have dropped, what is the fastest processor I can drop into this mb for at or under $100? I can't figure out how to compare speed between AM2 and AM2+, plartly b/c it seems the hypertransport speed of an AM2+ chip will be limited b/c it is sitting in an AM2 MB. I believe that if I upgrade to an AM2+, I will have to upgrade BIOS. Have people had problems migrating this Asus MB to AM2+, including the BIOS upgrade? THANKS!