I think that’s unlikely to happen. See what happened to Intel’s Larrabee / Knights Landing / Xeon Phi. They have 50-70 x86 cores (initially Pentium, later Atom

I think that’s unlikely to happen. See what happened to Intel’s Larrabee / Knights Landing / Xeon Phi. They have 50-70 x86 cores (initially Pentium, later Atom) on the chip, with extra AVX512 vector units. CPU cores are spending a lot of transistors minimizing latency: branch prediction, microops fusion, sophisticated multi-level caches. GPUs are fine without most of that (they do have caches but much simpler ones), they are spending majority of their transistors and electricity on ALUs. Instead of fighting latency, GPU cores embrace it and optimize for bandwidth on massively parallel workloads: they have cheap hardware threads so they switch threads instead of stalling the pipeline.