[Freeswitch-dev] Specs for 1000 channels streaming

Hi All, I'm about to buy new server for IVR type application where I might bump up system to use up to 1000 channels to do play/record type IVR application though event socket interface, and minor database lookups. I have been looking around Wiki and other posts but don't see any specific recommendations yet. I'm eyeing at following Dell spec : PowerEdge R610 Dual processor Intel® Xeon® E5606 2.13GHz, 8M Cache 12GB Memory WIll that be enough ? There are many questions - what's real bottleneck ? Is it CPU or memory or FreeSwitch can not utilize SMP, parallel execution etc.. ? I greatly appreciate if anyone can share experience and recommend better solution. - Jeff