Asus Republic of Gamers announced today that the Poseidon GTX 980 with the DirectCU H20, a hybrid thermal solution will allow the users choose between water or air cooling. This cooler supports a custom vapor champer that is in direct contact with graphics card’s GPU(Graphics Processing Unit), for better heat conductivity.
By using the water cooling system, Asus ROG said that the Poseidon GTX 980 temperature can achieve up to a whopping 27C lower to its compared reference cards, which could give you up to 10% increase in performance in Watch Dogs and up to 7% for Battlefield 4.
-Source: Maximum PC