New To unix and linux need to find out whats right for my CPU

[Tye]

Hello my name is Tye and I have been looking at using a anther OS liike linux but so far not been inpressed with Mandrake, Red Hat, or Gentoo.  I'm looking at using FreeBSD and want to know what type of Distro is right for my CPU I'm using a AMD K-6 2 with 3-D Tech. Your reply would help so much thank you for your time Tye