Quote:
Originally Posted by Dr. Bobsky
Water would definitely transfer faster. The heat capacity of air is really low...
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Air is a constant in both applications. Come on, you should know this.
A large volume of flowing water can move heat away from the water block adequately, but it is worse than a copper block. It will conduct heat more slowly and consequently also retain heat. That's one reason why radiators/heat-exchangers have to be so massive, any why the finned surface area is several times greater. Even with my 240x60mm and 360x45mm radiators, it would take only an hour or so of gaming for the system to overheat without fans.