post #31 of 31
Factoring in the thermal resistance of air cooling, even with the best heat sinks, basically means with a single direct die TEC that you wouldn't be able to achieve very good results. The thermal resistance of the Noctua NH-D15 is 0.0944*c/w, the thermal resistance of an EK Predator 240mm AIO is 0.075*c/w, the total thermal resistance of a full custom loop with more rad space and a better pump would be more like 0.03-0.06*c/w, so potentially 1/3rd to 2/3rd the thermal resistance of the best air cooler, which means between the two, the full custom water loop would have ~half the delta above ambient than the NH-D15 would and that is why water cooling is always better for TEC's, because you don't lose too much of your delta above ambient due to thermal resistance. Not saying OP should use water cooling, just saying air cooling won't do what he wants and therefore he shouldn't do it. Also TEC has no place in a data center unless it is proprietary industrial grade stuff.

For your chiller OC you have spread the heat load over multiple TEC's/heat sinks so it works, but with just 1 big TEC/heat sink and a large heat load from the CPU, the air cooling just won't cut it, the core temps won't be considerably better than just plain air cooling, if they are better at all because it could potentially be much hotter than plain air cooling. That Thermalright True Spirit probably has a thermal resistance above 0.1 degrees Celsius per watt with its stock fans, not much better with your 110cfm fans.