The amount of RAM you need to run your computer efficiently depends on a few factors, such as the type of tasks you use your computer for, how many running programs and applications you have open at once, and more. Generally speaking, most computers running Windows 10 should have at least 8GB of RAM, but if you are using your computer for more intensive tasks, such as graphics design, video editing or gaming, you may want to consider upgrading your RAM to 16GB or higher. Additionally, adding additional RAM can help improve your overall system performance, as RAM stores information that is frequently accessed by the operating system, applications, and other programs, so having more RAM can help load these files faster.
In addition to ensuring that your computer has an appropriate amount of RAM for your needs, there are other steps you can take to ensure that your computer runs as efficiently as possible. One of these is to reduce the number of applications and programs you have open at any given time, and try to limit the number of full-screen applications that you have running.
You can also make sure that your system is regularly maintained and optimized using a program like WinUtilities, which helps maintain Windows computer systems by cleaning out temporary files, fixing registry errors, and helping with defragmentation. Doing this can help improve the performance of your system and make it run more efficiently.