Understanding the wmic cpu/os output

I have 2 questions -

1. I have several computers on my network. When I use "wmic cpu" some of them return single line data output and others two identical lines. Does it (necessarly) mean those computers have a single or double physical processors?




2. When calculating memory "loadage" of a computer, which parameters should I use - "Physicalmemory" or "VirtualMemory"?