Sapphire has taken the fastest consumer grade GPU trophy from EVGA with the AMD Graphics Core Next architecture based HD 7970 6GB Toxic Edition, clocking in at 1050MHz (1100MHz via PowerTune Dynamic Boost) and 6000MHz (effective) memory. The 7970 Toxic Edition has built-in overclocking via what Sapphire calls the “Lethal Boost Button” that pushes the [...]