You can only get 2tb of storage max i believe, you are probably bottlenecked elsewhere if you are actually needing to move that much data that fast into memory in practice. I wonder what the temps would even be doing something that maxes that ram bandwidth
Not comparable. M2 Ultra with 128GB RAM has 800 GB/s bandwidth.
Maximum bandwidth for a DDR5 Intel 14900K system is 89.6 GB/s. https://www.intel.com/content/www/us/en/products/sku/236773/...