I would like to point out that most approximations of current computing power take into account only specific types of workloads, usually CPU horsepower too. GPU horsepower has already broken the 1 TeraFLOPS barrier since 2008, with the introduction of the GeForce GTX 280, which was 933GFLOPS, and the Radeon HD 4870, which was already a bit over 1TFLOPS. AMD's new series break the 2.7TFOPS per GPU, I think.