I was just perusing the Falcon Northwest configurator; the Talon has a choice of chipsets; the lesser handles up to 32 GB, the greater handles 64 GB. :D

     Even with a hideous torture-test render, the most memory I've been able to prod Poser to use was just over 48 GB. My poser usage habits are especially resource-heavy (huge enviro sets, complex materials, large render dimensions, high render quality settings), yet 16 GB would suffice for 90% of my projects.  Most Poser users would probably never approach Pixie's 8 GB limit.

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