Can i upgrade ddr3 to ddr4 in my acer e5-576g-59q9

PCB has an ARMv7 chip, hence needs to use this image, PCB can use the ARMv8 image, which we then generally recommend Raspberry Pi 2 photo

Completely impossible Even if motherboard has both types of DIMM slots only one of them can be used at a time #2

can casinos tighten slot machines No They don't even fit in the same slots There were a very few motherboards that had DDR4 and DDR3 slots, but you could only use one

can i use pcie 30 in 20 slot All DDR memories are mutually incompatible The DDR234 DIMMs can only be used on their respective DDR234 sockets, with the notches differently located