[Does Windows boot faster? Never noticed that, though a few of the rigs I'm talking about have had fast SCSI drives, that sure helps.
Apps load faster? Sure with those fast SCSI drives they will, not because of two CPU's.
Etc etc.]
Yes, and yes, actually. I don't have any SCSI drives, and both the OS and applications load faster, as you would expect with two processors chewing through threads.
[Oh and one common misunderstanding seems to be that just because an application has several threads open, it will benefit from SMP]
Explain this please. If more than one thread has work to do at the same time, then the app will benefit from multiple processors. If an app is simply using a thread to idle and poll a resource or something, then you're right, it won't benefit. However, only an idiot would create a multi-threaded app just for that purpose in Windows. You have too many other, simple options for occasional wake-up tasks.