Anybody running Poser 6 on a double core system can please tell me if it runs
  a) faster (hey, one can always hope!),
  b) slower,
  c) no difference
compared to a similar single core system?

Looking for a means to reduce time on week-long renders...

(BTW, my actual rig is an Athlon 64 4000+ with 2GB of low-latency RAM.)