As the ice inside the gallon jug melts, there will be alot of condensation on the outside of the jug. Kinda like when you leave a glass of drink containing ice on the table for a bit. The cool temp of the vessel, cools the surrounding air near its surface to its condensation point, so condensation is deposited on the surface.
Have you ever looked into peltier coolers? Very neat little items. Add a DC voltage to the 2 wires, one side gets hot the other gets cold. I have a coleman 12 volt cooler that works as good as any fridge. It contains 1 small peltier cooler chip with a heat sink on each side. And the way peltier coolers are made, you could sandwich one to a cpu or a gpu chip and have a supercooling system without alot of cost. The peltier devices are available on Ebay for a few bucks. That's a much better way to go IMO, it'll save you from condensation and the pain of constantly freezing ice for the ice bucket cooler.
I personally think an extra cooler for a GPU is not needed. As long as the heat sinks and cooling fans are clear of dust debris, they will run cool. Most overheating problems can be solved with some compressed air and a vacuum cleaner to remove the dust clogging the heat sinks and fan blades on the cards. I had experienced some cooling problems on my 7950's about 2 months after installation. The temps simply started rising day by day. Each day the things became more difficult to cool. They went from running 68 to 70 to running 80 and eventually 85. I had added box fans blowing directly into the open chassis on the cards, with little cooling gained. I tried lower hash settings, but that didn't help. I was about to pull my hair out.
Finally , I did a dumb thing. I couldn't physically see the fans moving because of the card's location in the chassis, so I stuck my fingers near the cooling fans on one GPU to feel if there was any air movement (to verify the fans were turning) BZZZT....I touched the fan blades by accident. When I did this a cloud of dust flew out of the fan, a few seconds later, the GPU temp dropped a few degrees.
I pulled the cards and sure enough, they were completely clogged. I was shocked at the amount of dust that was packed into the card heat sinks and on the fan blades themselves (except the one I touched of course). A vacuum cleaner wouldn't pull it all out from between the grills in the heat sink. I had to physically remove the dust clogging some of the grills with a small eyeglass repair screwdriver. This happened over a period of 2 months!
Cooling problems = Dust in your GPU card heat sinks.
Best, Chris B.
can you add a picture of how is done so we can get a better ideal???
