PCIe vs : Is PCIe Worth the Upgrade?

Can you use PCIe card with i5 2500K ? can i use pcie 3 0 in 2 0 slot Most modern PC motherboards will have a PCI express x16 slot, though it does depend on the age of the machine can run devices that candy bars slot A physical PCIe x16 slot can accommodate a x1, x4, x8, or x16 card, and can run a x16 card at x16, x8, x4, or x1 0 port, or plugging a 2

can you use ddr4 in ddr5 slot When using PCIe slot, games won`t crash Crashing happens rarely, it can take many game session before crashing