> What workloads are so massively parallel that they can use 64 cores of x86 but can’t use the thousands of CUDA cores on a Quadro card? I'm a bit behind on GP

> What workloads are so massively parallel that they can use 64 cores of x86 but can’t use the thousands of CUDA cores on a Quadro card? I'm a bit behind on GPU architecture, but presumably workloads which are branch-heavy, lack coherent execution within a warp (see dragontamer's comment), and don't make use of floating-point. GPUs are not the equivalent of manycore CPUs.