Same reason a CPU can't compete with a GPU when floating point math is involved. GPUs evolved to do one thing and do it very well, in parallel. CPUs are swiss a

Same reason a CPU can't compete with a GPU when floating point math is involved. GPUs evolved to do one thing and do it very well, in parallel. CPUs are swiss army knives. It's like comparing a swiss army knife to an electric meat slicer at a deli. Bitcoin miners built their own chips (called ASIC's, application-specific IC's) just to do hashing.