Photoshop uses scratch files, you could say Photoshop uses its own brand of virtual memory. I think this behavior dates back to the early MacOS and Windows days(OS 6/7, Win3.x) when Photoshop had to handle larger chunks than Windows or MacOS could. By the way,that 2 GB per process limit can be cranked up to 3 GB, if you use a certain switch in boot.ini. No more, since Win32 uses the address space from 3GB to 4GB for system tasks (so other processes may not use that address space). Still, the application must have been compiled to use more than 2 GB, else it won't work. On Win64, the system address space is somewhere in the last terabyte it can address, and in WOW64 a full 4 GB can be assigned to a Win32 application - if it is compiled for it. Actually, all that's required to run Poser on WOW64 with 4 GB addressble, or WinXP 32bit with 3 GB addressable is a recompile using a MS compiler and the /G switch.

The pen is mightier than the sword. But if you literally want to have some impact, use a typewriter

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