I'm really not the type of person to start out with dry ice, but I may due to the availability of funds in the near future. It'll be interesting to see the progress I make by going to each next step of cooling.
I've already learned a very important lesson....my cpu runs a heck of a lot better when it's really cold.
I'd love to test out my Opty 170 with cold, but I couldn't get either 939 board going in a recent attempt.
What about the tube?
EDIT: it's been a good 3 weeks

is liquid helium expensive? It'd be fun to try. (nevermind..I don't want to know)