You could even go looking at a VAPOCHILL case, which is cooled using Freon, the same thing as older fridges. Check out <A HREF="http://www.vapochill.com" target="_new">http://www.vapochill.com</A> ... prices are high, but so are your expectations.
Have you ever stuck your finger in a Vantec Tornado? That's 5700rpm right there - ouch. Today's public service announcement: don't play with plugged-in fans - especially Tornados..heh.