What will happen if I mix DDR4 RAM and DDR5 RAM in my PC?

Reminder: DDR4 RAM Won't Fit Into DDR5 Slots and Vice Versa ddr5 slot compatible with ddr4 DDR4 is not backward-compatible with DDR3 so a DDR4 DIMM will not fit on a DDR3 DIMM slot Not only is the key notch of each DDR generation ddr5 in ddr4 slot 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 (cpu and

ddr5 slot compatible with ddr4 No The sticks are physically different DDR4 wont fit in a DDR5 slot and vice versa