Physically cleaning RAM is a relatively simple process. First, it is important to disconnect the computer from any power source. Next, find the RAM modules and remove them from their slots. Once the RAM modules are removed, use a can of compressed air to blow any dust or debris from the surface of the modules. If necessary, you can also use a soft cloth to lightly wipe down the modules. Once they are clean, simply reinsert the RAM modules into their slots and reconnect the computer to its power source. With a little time and effort, you can keep your RAM clean and running smoothly.