They use the z390 chipset, so you have to have at least a z370 board to use them. For the 9700k and 9900k if you have a z370 board you need to do a bios update before they will be compatible. For 8th and 9th gens I'd suggest just getting a new z390 board, there are some very nice budget ones. Just stay away from Gigabyte, their bios is just god awful. @HaydenD01