Why do you need 32 GB?

I have 8 GB and Vista 64-bit now. I checked the usage of memory last days.

Vista 64-bit takes indeed 2 GB right from the start. This is heavy.
But 3d applications like ZBrush only take about 512 MB.
Even games like QuakeWars only take 512 MB.
Some modern games like Crysis take up to 2 GB (yes, even the 64-bit version).
A second OS in a virtual environment (XP in my case) takes "only" up to 2 GB.

Up to now I never exceeded 8 GB on Vista even with lots of these applications in memory. Most of the time I need "only" 3 GB.

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