raff
Before you upgrade ask yourself WHY?
Security ?, Features ? -> Go for it!
If you are thinking along the (gentoo) lines of "faster for my P3 than for a 386 ..."
then you just will find out "overall I do not see any SMEs peed improvement ... SME is not even idling faster <grin>"
Seriously: Check which prog uses your cpu cycles ... it's NOT kernel stuff
just my 2c
Regards
Reinhold