19-13900ks 128gb ddr5 ram

My objective is to construct a modest AI workstation that boasts an Intel Core i9*13900KS, an ASUS ROG Maximus Z790 Extreme, and a Nvidia RTX 4090. Although Intel promises 128GB DDR5 RAM capability, the CPU's maximum 2-channel limitation makes it more of a fallacy than a reality. I am...