DDR5 SODIMM laptop memory is a type of RAM that can be used to upgrade the performance of compatible laptops. DDR5 stands for Double Data Rate 5, which means it can transfer data at twice the rate of DDR4, the previous generation. SODIMM stands for Small Outline Dual In-line Memory Module, which means it has a smaller form factor than regular DIMMs and can fit in laptops with limited space. DDR5 SODIMM laptop memory can offer faster speeds, lower power consumption, and higher capacity than DDR4 SODIMM laptop memory, but it also requires a compatible processor and motherboard to work properly.