Thanks a ton, that did help!
Both of the mobos I was looking at were Athlon 64 boards.
This one has the 800 Mhz FSB listing:
http://www.newegg.com/app/ViewProduc...180-061&depa=0
While this one has the 1.6 Ghz FSB:
http://www.newegg.com/app/ViewProduc...180-056&depa=0
Same socket and everything, but it's peculiar that one is double than that of the other.