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

What will happen if I mix DDR4 RAM and DDR5 RAM in my PC? ddr5 slot compatible with ddr4 This applies to DDR5 and DDR4 memory modules DIMMs Definitions One DIMM per channel board design means one DIMM slot per channel (see bottom right 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 in ddr4 slot DDR4 RAM modules are not compatible with DDR5 motherboards This is because DDR4 and DDR5 use different slot configurations and electrical standards DDR4

ddr5 slot compatible with ddr4 An overhead of a laptop motherboard with DDR4 RAM sticks installed and flaring upward The Framework laptop mainboard has RAM slots so you can Rig won't POST with all 4 RAM slots occupied Local tech guy thinks it's because I don't have a second ATX 8 Pin plugged in and wants me to buy