Does benchmarking include assessment of performance increases due to RAM?

We have gotten permission to max out the RAM on one of our workstations to 48 GB as an analysis system. (We are pending purchase of several of the simulations tools). The Chief engineer wants a metric to see if the cost of that much RAM is worth the money. I have been researching the SolidWorks benchmarking tool, but it doesn't appear that it address RAM OR simulations, to include flow simulation.

Can anybody clear this up or help me figure out the best way to measure the performance gain?

SolidworksAdministration