For example, if a user has two 4GB modules installed with 8GB of DDR4 RAM now, they may want to add another 8GB module or replace the current ones with ones that have a higher capacity. To prevent harming gamesdlcomponents or causing compatibility problems, it is essential to follow the right installation procedures when doing an upgrade. Before opening the case and handling any internal components, users should completely shut down their systems. Replacing RAM Modules. To minimize the risk of static electricity damaging delicate hardware during installation, ground yourself by making contact with a metal surface.