PP2010 has both 32bit and 64bit files, so that it can run on 32bit machines.  To ensure that you are rendering with FFrender64, go to the title bar on screen and follow **edit:general preferences**, select the **render** tab, then check the *separate process* box.

When installing to a 64bit system, you can un-check the box for install 32bit files.

A scene of 80Mb in preview can pull 8Gb during rendering.

Poser 12, in feet.  

OSes:  Win7Prox64, Win7Ultx64

Silo Pro 2.5.6 64bit, Vue Infinite 2014.7, Genetica 4.0 Studio, UV Mapper Pro, UV Layout Pro, PhotoImpact X3, GIF Animator 5