I've read some threads about how much wattage different pumps put into the loop. I would think that since nearly all pumps are inside the case that the problem would instead be how much watts they disapate into the air, since that will warm up the air inside, heat all components and finally warm the rad? So my question is, is it not better for a pump to add all its heat into the water, and not into the air? Water will heat less for a given wattage than air also