IBM Sequoia, is now the fastest computer in the world. The computers were ranked by a test, the Linpack Benchmark, which gives each computer a petaflop/s score (quadrillion floating-point operations per second). Sequoia tested at 16.32 petaflop/s, compared to the previous top one – Japan’s K Computer’s 10.51 petaflop/s, which made K fall to the second place. Wonder how fast it works? IBM said, “Sequoia is capable of calculating in one hour what otherwise would have taken 6.7 billion people using hand calculators 320 years to complete if they had worked non-stop.” Also, Sequoia consumes less energy than the K computer, 7.9 megawatts compared to 12.6 megawatts. Professor Dongarra told the BBC “it was unlikely that another manufacturer would overtake IBM in the next year”.