With the AM5 platform from AMD on the horizon, five major motherboard manufacturers have annonced their flagship motherboards with the X670E chipset. Some of them are having fun with this generation’s multi-faceted step into “five”: AM5, PCIe Gen 5.0, DDR5, 5nm process, boost clocks over 5GHz, you catch the drift. But do you know what every single announced motherboard has fewer than five of? PCI Express (PCIe) slots.
Other than a GPU and the occasional WiFi card, I haven’t really had any need for my expansion slots in a long time. I just don’t know of anything useful. I doubt they’ll actually go away any time soon though.
I’d say storage would be a good third reason to use PCIe. A RAID card with multiple NVME slots would be the fastest storage option available. Not sure how many PCs would need storage faster than 4x PCIe Gen 5. Additionally, faster or additional networking considering how long gigabit has had its hold on the PC market. Still waiting on affordable switches though.