Three Processing Modes

Behind the scenes, Chrome can run in three processing modes. The most efficient of these is single process mode. To use this mode, open Chrome's properties in the Start menu and add the string '-single-process' (without the quotes) to the end of the Target box. Now, no matter how many tabs you open, the browser will use just one process.

If you add the string '-process-per-site' to the Target line, Chrome will open a new process for each tab, but if you open the same site in two tabs, it will run them on the same process. The string '-process-per-tab' will force Chrome to create a completely new process and use a new memory space for each tab, which is its default.

Thanks Tech Radar!