We recently acquired a Nvidia GTX Titan graphical processing unit (GPU) for statistical computing at work, specifically double-precision floating point operations on the CUDA API. Before I lock it away in the server room I would like to see how it compares to my primary GPU at home – a Nvidia GTX 680, and my older GPUs – a pair of AMD Radeon HD 5770. This act of comparison is called benchmarking – running a number of standard tests and trials in order to assess the relative performance of a piece of hardware or software.