Virtual memory, also known as a Page file, adds to the physical RAM by using disk space.However, moving the page file to a secondary SSD can help free up space if you run out of space on the primary.

For example, if you're using a traditional rotating platters hard drive, you can use another Hard Disk Drive (HDD) or Solid-State Drive (SSD) to store the virtual memory. Still, if you're using an ...

We're actually using the SSD as virtual RAM. We're seeing more than 40x performance increases over the current generation," Microsoft said in the Project Scarlett E3 2019 reveal video.

Since consoles use a shared VRAM/DRAM memory pool (in this case, Project Scarlett's 16GB of GDDR6 memory), ... "We've created a new generation of SSD. We're actually using the SSD as virtual RAM.