There are only two places you can store data, disk(hard drive) and memory(RAM). If you use to much memory, then the system will put the information on disk in the pagefile and you are not getting anywhere. All you are doing is pushing the problem around, you are not necessarily improving performance.

If you want to improve performance, do benchmark tests FIRST do see what and where your performance issues are before implementing a solution without understanding the problem.

Refer to the discussion on the XY Problem which is what you are really doing