the cpu fan reviews you can see
http://www.athlonoc.org
there are many good choises for you
compare with P4, I think AthlonXP's C/P is really better.
for game....the athlonXP & P4 are both too enough to play any game
that you want
just like ATI Radeon Series & nVIDIA Geforce Series, they are all
ok for any game~
ps: Radeon R7500 or up is better
nVIDIA Geforce3 or 4 is better (not include Geforce4 MX haha~)