If you want to switch to Intel, you'll need a new motherboard, the GA-970A-UD3 board is only compatible with AMD processors on the AM3+ socket. The i5 4690k requires an LGA motherboard with an LGA 1150 socket. If you want to be able to overclock the i5 4690k, you'll need a motherboard preferably with the Z97 chipset, though a board with a Z87 chipset would also work, but it might need a BIOS update to support the 4690k.