Cray has recently surpassed IBM and has obtained the lead position on the Top500 Supercomputer chip-measuring contest. The XT5 supercomputer, better known as Jaguar, has six-core Opteron processors and has climbed the mountain of 2.3 petaflop per second. A petaflop is a measure of a computer's processing speed. It is expressed as one thousand trillion floating point operations per second. This calculation has exceeded the petaflop per second threshold of 1.042 petaflops.