I would argue that the total set of "good performance" workloads are smaller on a GPU than they are on a CPU. However, "good performance" on a CPU is much much

I would argue that the total set of "good performance" workloads are smaller on a GPU than they are on a CPU. However, "good performance" on a CPU is much much worse than "good performance" on a GPU. CPU's just achieve their mediocre performance on a larger set of usecases. GPU's are specialized devices that are very good at specialized activities.