I suggest using the D-Fend frontend. It makes the whole process a lot easier. To answer your question, DosBox can emulate a number of processor speeds, as well as memory allocation, etc. Generally, ...

DOSBox provides a full DOS environment, but by default it does not have access to any of your Windows files and folders. Thus, before you can run a program in DOSBox, you must mount its folder inside ...

The major benefit I see in DOSBox Pure over DOSBox Classic is a sort of built-in containerization for games. DOSBox Pure creates a separate environment for each game automatically when it's "opened" ...