The Virtual Memory is not used until the Physical RAM in the system has been exhausted and the system requires somewhere to hold additional information. What we are essentially doing is raising the ceiling and giving the operating system the extra room it needs to maneuver if it runs out of physical memory.
We use this procedure a great deal when attempting to enhance the performance of systems where SOLIDWORKS is having difficulty with importing or exporting geometry, or handling larger assemblies.
A kin to the article that our teammate Josh Carrier wrote, back in 2010, I thought it high time we review the process of how to increase virtual memory on your workstation.