As it says the Physical memory is the RAM chips. Even if Linux calls
them something else. And the System read out in MS just lists the
computer use of that memory.

DRAM and SDRAM Memory Chips (210 companies)
Dynamic random access memory (DRAM) chips and synchronous dynamic random
access memory (SDRAM) chips are single-transistor memory cells that use
small capacitors to store each bit of memory in an addressable format
that consists of rows and columns. Because capacitors are unable to hold
a charge indefinitely, DRAM memory chips require a near-constant pulse
of current to retain stored information.

I do know all about this you know but i do hope it help other to have it
all thrown at me