Maybe I'm missing something, but PCIe Gen4 does seem like a big deal since it's effectively doubling the data rate of the previous gen. Meaning, once all/most o

Maybe I'm missing something, but PCIe Gen4 does seem like a big deal since it's effectively doubling the data rate of the previous gen. Meaning, once all/most of your peripherals are PCIe 4 compatible, you'll theoretically have double the PCIe lanes, on account of only needing half as many. One immediate benefit that comes to mind, is storage controllers. With 8x spinning disks, you might get away with using a single lane which can provide almost 2 GByte/s bandwidth. And controllers previously using 8xGen3 lanes could switch to 4xGen4 without any loss in performance.