One cool thing is that RTX IO is also compatible with Nvidia's Turing as well as Ampere! So the 2000 series shouldn't get "left behind" with it comes to IO performance.
https://www.nvidia.com/en-us/geforce/news/rtx-io-gpu-accelerated-storage-technology/
"RTX IO is supported on all GeForce RTX Turing and NVIDIA Ampere-architecture GPUs."
PC Specs: CPU: 7800X3D || GPU: Strix 4090 || RAM: 32GB DDR5 6000 || Main SSD: WD 2TB SN850