AMD launched for PC gamers a two-chip graphics card that it hopes will give it a lead in price and performance over rival Nvidia. The ATI Radeon HD 3870 X2 combines two graphics processors on a single board, giving it nearly double the performance of the single-chip Radeon HD 3870 introduced in November 2007, according to AMD. The latest graphics card tops a Teraflop, or 1 trillion floating point operations per second, which is the equivalent of a trillion mathematical calculations per second.
