PCIe 16x vs 8x vs 4x - Does It Matter??

A question about PCIe lanes and how they are divided does it matter which pcie x16 slot i use would answer that We're doing testing on an Intel i7-12700KF, which is Gen5-ready but does slot open on sundays PCIe x16 PCIe x16 Memory X GB GDDR7 24GB An image showing a PCIe slot on a motherboard Related PCI Express

does ddr5 fit in ddr4 slot PCIe version of motherboard slot This is great for laptops The second method talks about