Crossing water with Pots
 

Well not water exactly but

Take a DIce/LN2 pot Run a coil of copper piping down near the bottom of the pot. Add 2 barbs to it. Run a low power pump and a chipset/mosfet block and let the POT handle the "rad" duties.

Too expensive? Too much heat dumped onto the CPU? Cold Bug issues?

What would be the big drawbacks to a simple setup like this?

The heat-exchange between the pot and the tubing would be minimal. If you ran the tubing inside the pot, it'd be too cold.

An example is my first chiller mod that submerged 20' of copper tubing inside a -30c phase bath. The heat-exchange between the bath and the copper tubing was too innefficient.