> CPU memory only has one bus If people are paying $15,000 or more per GPU, then I can choose $15,000 CPUs like EPYC that have 12-channels or dual-socket 24-ch

> CPU memory only has one bus If people are paying $15,000 or more per GPU, then I can choose $15,000 CPUs like EPYC that have 12-channels or dual-socket 24-channel RAM. Even desktop CPUs are dual-channel at a minimum, and arguably DDR5 is closer to 2 or 4 buses per channel. Now yes, GPU RAM can be faster, but guess what? https://www.tomshardware.com/pc-components/cpus/amd-crafts-custom-epyc-cpu-for-microsoft-azure-with-hbm3-memory-cpu-with-88-zen-4-cores-and-450gb-of-hbm3-may-be-repurposed-mi300c-four-chips-hit-7-tb-s https://www.tomshardware.com/pc-components/cpus/amd-crafts-c... GPUs are about extremely parallel performance, above and beyond what traditional single-threaded (or limited-SIMD) CPUs can do. But if you're waiting on RAM anyway?? Then the compute-method doesn't matter. Its all about RAM.