Quote Originally Posted by SSN585 View Post
What really confuses me, and brought me to this forum in the first place, was that I'm using 1066 RAM with a Phenom on a MB that supports 1066, yet I cannot get anywhere near 1066 without a BSD. So, I thought it would be a good time to learn the reasons why.
Phenom doesn't support EPP 1066, it supports only JEDEC 1.8V 1066 (not yours) so it won't boot 1066. The only way it did is, the MB manufacturers had to do a lot of personal modding and it works for many and still won't work for others. Depends on your RAM and it's internal timings.

If 1066 in BIOS at the same every settings as default crashes/fails to boot your system, then your RAM has problems with the current BIOS and you need to query ASUS to add support for your RAM too.