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Originally Posted by Mathelo
But we still have the same amount of heat to exhaust (actually more because of the pump)? Seems to me that the water-cooling advantage over air-cooling is a combination of the higher specific heat capacity of water, more surface area to work with on the rad, and an increased volume of airflow. If we keep airflow volume more-or-less equal, than results should be the same for ac and wc.
So, for a design goal of both quiet and oc, we'd want to have:
- Higher heat capacity of water (additives?)
- Larger rad (I recall that Cathar has demonstrated diminishing returns here)
- Lower air volume to keep noise levels down or very large air volume sufficient to keep noise down. The consensus seems to be that more fans don’t generally lower noise even if running slow, so we’re probably talking passive here.
- Sound insulation
This translates to a higher temperature delta at the rad being an important variable if we want to achieve quiet WITH high oc.
Bringing this back to design goals and compromises that need to be made, if you don’t have to vent the rad into the same chamber as the heat source and you have space, a separate rad box should be better.
L
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as usual, these are generalizations, there are always exceptions
decent water setup will cool the CPU far better than any air setup, for less noise, no exceptions (with same or less noise)
adding additives decreases water's thermal capacity
bigger the rad the better
sound insulation is fine if desired
agreed, if you dont have to vent inside case great, but it really won't change CPU temps to even close air cooled temps