[Freeswitch-users] Which CPU to select

Hello list, Could you please suggest, based on your experience, which of the CPU will be enough to handle 1000 simultaneous calls using G711 codec on all end points? Is it really needed to buy Xeon with 4 cores? or Core 2 Duo or Quad will be perfectly enough? Assuming CPU frequency is ~2.5 Ghz The following page seems like not too much updated: http://wiki.freeswitch.org/wiki/Real-world_results Thank you, Vitalie