I seem to be having the same problem everyone else is having, so what are the minimum requirements to run asterisk? thanks
There is a new book that has a whole section on sizing and hardware considerations:
As for immediate information, as always the Wiki is a good place to look:
voip-info.org/wiki-Asterisk+Hardware (dimensioning is a link on that page)
Just like with any application, hardware sizing is an in-exact science as it is highly dependent on how you use the system.