Poseidon, the Greek god of water and the sea. Seems like an appropriate name for a video card with factory installed hybrid (water and air) cooling. The popular DirectCUII air cooler gets an added water cooling channel and a new name too... DirectCU H2O. This GTX 780 based offering from ASUS gives the user a choice between air or water to keep the card cool. Not only do we have a unique cooling solution attached to the Poseidon Platinum GTX 780, but ASUS took it a step further and provided a factory applied GPU overclock to the card as well.