Is Sapphire really that awful? If i get a Sapphire Radeon X1800XT, and it breaks, am I screwed? Whats the difference between a Sapphire Radeon and the ATI Radeon? Does Sapphire use shittier components to build the board or something? Should I be concerned that my Sapphire Radeon isn't going to last as long as an ATI Radeon?