i have not used one and i have only watch one overview. by LinusTechTips http://www.youtube.com/watch?v=ovTJk0nXWxo
it does look good and i would very much like to test one. my only problem is that you can not change the fan on it.
if the motherboard can give enough power then use the motherboard header. most likely the motherboard header will give a RPM for the pump to so you know it's running
How are the temps on it? have not seen any reviews by sites showing temp results
Right now, my room temperature is 83F degrees. Idle temps: Graphics- 94F, MB- 83F, CPU - hangin around 100F. Haven't really played any games on it yet. Bioshock infinite is almost done downloading