Just rendered a complex scene under 3.7 beta 25 64-bit
under Vista Ultimate 64-bit under Boot Camp on a Mac Pro, 16 GB, 8-core 3.0
machine.
Render Time: 6' 36"
the same scene on Win XP SP2, Dell 2.2 GHz, 2 GB RAM:
3 hours 6 minutes!
best,
d
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dhmiller [at] comcastnet
http://www.dennismiller.neu.edu
net