Just my personal opinion, but for the P6T Deluxe V2 and similar boards I think adding a motherboard full coverage water block along with MOSFET water blocks is a waste of time and money. They simply don't get hot enough to require water cooling even with the most extreme overclock. When water cooling, simply add the supplied ASUS fan to the main MOSFET heat sink and a separate 40mm fan on the supplied standoffs to the main motherboard heat sink as per the instructions in the motherboard manual. This is sufficient to keep them cool.