There was a similar product for the Mac at the time called RAM Doubler by Connextix. It seemed to work better than the Mac virtual memory scheme at the time.
https://tidbits.com/2019/01/24/25-years-ago-in-tidbits-ram-d...
"Developed by Connectix, RAM Doubler was one of the most magical utilities of the early days of the Macintosh. As its name suggested, RAM Doubler promised to double the amount of usable RAM in your Mac, and amazingly, it generally delivered."