Dieter: Short answer, yes
(for me it works, have a look at the graph)
Long answer: I have no idea how it would compare to any other waterblocks. What I can say is that it walks all over my modified taisol heatsink (80mm papst fan). But then "c'est normal" as we say here!
FYI, cpu is an Athlon 1800XP and mobo is k7s5a - running @ 133/133
grvydude: (wild guess) you sure you can't order online?
edit: (oops) forgot to mention that the temps are for full load running burnK7, as reported by MBM5 for the cpu in-socket sensor