Should you buy a PCIe or SSD?

For example, a PCIe x1 slot provides one lane and transmits data at 1 bit per cycle x cards seamlessly plug into PCIe slots, and

PCIe x32 However, the connection will run at the speed of the slowest device, so a PCIe SSD can only run at PCIe even in a slot that supports PCIe

pcie slot dimensions You can insert a PCIe SSD card into a motherboard with PCIe slots, but this SSD won't be able to make full use of the higher bandwidth

pciex1_1 slot I believe both slots are generation 3 because chapter 1 of the manual indicates that HP only offered Gen 3 NVMe SSD's in the model series and