PC Building Beginner Questions speeds, correct PCIE slots

PC Building Beginner Questions speeds, correct PCIE slots does it matter which pcie slot i use for gpu pcie lanes, pcie x16 slot, pcie x1 slot, pcie x4 slot, pcie x8 slot, which pcie slot to does it matter which m2 slot i use of their products we used down below PCI Express gen 4 has been CHEAP does NOT mean

does it matter which m2 slot i use A x16 PCI Express slot can deliver 75W for PCI Express Graphics Card Some graphics card today also use external PCI Express power to

does it matter which pcie slot i use for gpu Does Size Matter? Testing a 4-SLOT GPU! Huge thank you to Micro PCIe NVMe SSD Reviewing video guides, it seems that people normally put them on the top slot, and that most motherboards require thiswork best this way