Dano2k0 created a fully internal water-cooled Xbox 360. Unlike previous water-cooled Xbox 360 mods, this one has everything inside the original Xbox 360 case, including the water reservoir and pump. Both CPU (Zern GPU block) and GPU (Koolance GPU-180-H06 block) are water-cooled, with internal Tank-o-Matic mini reservoir, 12v thermaltake pump and DD fill port on the plexi window.
This is an incredible mod. Not only does it pack in some great cooling action, it is one of the most amazing modding jobs seen on a 360. We’ve seen water cooled 360’s before, but this is completely internal. Source: Slashdot.