Sapphire Blizzard X1900 XTX water-cooled graphics card
 

ATI's Radeon X1900 is a darned fine graphics chip but while it has taken the fight to Nvidia's GeForce 7900 GTX in no uncertain terms it also produces plenty of heat. When ATI updated the Radeon X1800 core to produce the X1900 it increased the number of pixel shaders from 16 to 48, and in the process it raised the transistor count from 321m to a phenomenal 380m, with the core covering an area of 352 square millimetres. As a result, an X1900 graphics card draws about 150W from your power supply almost all of which ends up dissipated as heat...