I think that the only CPUTYPE for amd64 at the moment is athlon64.
OH, and please don't threadjack. If you have a question, ask it with a new thread (after searching, of course). Please do not simply tack it onto the end of someone else's thread.
Doubly important if the thread does not apply to your CPU - that is not a 64 bit cpu!!!
A slightly older /usr/share/examples/etc/make.conf lists these as the CPUTYPES for AMD CPUs
Code:
# (AMD CPUs) opteron athlon64 athlon-mp athlon-xp athlon-4
# athlon-tbird athlon k8 k6-3 k6-2 k6 k5
Take your pick.