P6T works extremely well with 12 GB and NVIDA 9800 GT SLIi x 2 on windows 7 x64.

everything I've installed poser 7-8 carrara 7 and vue 8 inf no problems.

I have 2 monitors on this box an old viewsonic bottle and a 1080p LCD

Renders that took all day to render on my old dual core now render in hours so to keep my machine bogged down I now can render 3x4 6400x2400 to maintain my all day renders when i'm working.  One thing to modify on w7 is standby sleep mode, i7 needs a method to see cpu usage and if below a level then go to sleep.  Poser 7 uses 13% of the core, poser 8 uses 100%. carrara uses 100% but is still memory limited.