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It_The_Cow said:It's possible, but not recommended for continuous use. If you know anything about thermodynamics, you'll know that it takes a certain amount of energy to heat up 1 kg of a substance by 1K. A processor, over time, can boil water if it isn't cooled as quickly as it's getting heated up.
With passive cooling with a fish tank, you limit your cooling power by limiting the surface area that can be cooled. Compared to the entire area and the exposed surface area of the water, it's quite small. Unless your tank is 100cm x100cm x1cm (exaggerating), your water will most likely heat up slowly over time.
If you still insist on not having a radiator, drop some blocks of ice in the tank every now and then. That or turn don't keep your computer on all the time
Depends how cheap. Passive cooling could be better than a radiator, depending on its quality. Depending on your setup (in this case, CPU and tank size), it could take a few hours to a day to heat up the water 1K. This should give you plenty of time to throw in ice from time to time. Throw in a big block of ice, and it'll probably take a few days to melt it completely. How well it will keep the temperature down is different, thoughkttdkt said:So it is better just to get a cheap rad?
Do you always keep ur pump on?