Can you use DDR4 memory with DDR5 cpu intel?

Intel Z790 Motherboards With Up To DDR5-6800 & DDR4-5333 ddr5 slot compatible with ddr4 Find compatible memory kits for your motherboard Just select the motherboard desktop memory ddr ddr2 ddr3 ddr4 ddr5 Desktop Memory Designed for ddr5 in ddr4 slot If you're building a new computer with a new motherboard, you'll need DDR4 RAM If you're using an older motherboard or upgrading a computer,

ddr5 slot compatible with ddr4 When upgrading from DDR4 to DDR5, one must replace the motherboard to one with DDR5 compatible slots An upgrade usually involves a new CPU