Hardware Unboxed on X: Just to clarify DDR5 is not backwards

does ddr4 fit in ddr5 slot   Dan does ddr3 fit in ddr4 slot

Stick on the right isn't DDR4 or DDR5, that's either DDR3 or DDR2 The pin pitch shrunk when they went to DDR4, you can see it's wider on that

A PCIe slot can also serve as an electrical power Most will either support DDR4 RAM or the newer DDR5, with a variety of supported clock speeds  To recap here, DDR5 DIMMs are physically the same as DDR4, with the same number of pins

book of fruits halloween slot DDR5 modules will not physically fit in the memory module slots To not damage the motherboard, do not try to force fit the modules in the DIMM4 Yes You need to choose a z690 or b660 that supports ddr4 Should be in the name, for sure in the specs Edit: z690 is fully overclockable (