We are running VMware 5.5, vm version 10 - I have 1 2008R2 Standard server that has 12 CPU(s) (so I know it can be done).
I am trying to increase from 4 to 8 on a different 2008R2 vm. I get 8 in device manager but only 4 show in task manager.
I seem to remember something having to be added to act like I had 2 cores with 4 processors each but I can't find it - having to do with windows 2008R2 standard only supporting 2 cores.
Maybe I added something in vm options, advanced, edit configurations?? (the one with 12 is running and I can't take it down to investigate)