I'm running FreeBSD 4.5-stable and KDE3 on an Athlon 1.4@1.6 with 512MB 2100DDR and (while I'm usually a minimalist in my windowmanager selection), it's very pretty and works quite well. No lag whatsoever and great stability thus far...
You can get packages for FreeBSD at http://freebsd.kde.org
Cheers!
You can get packages for FreeBSD at http://freebsd.kde.org
Cheers!