Digital BW, The Print

Paul Williamson writes:

> Because Photoshop CS can only address a maximum of 2GB of memory, and
> in fact it only looks at the first 2GB, some of which is used by the 
> OS, leaving a maximum of 1.7 GB available for Photoshop.

The same limitation applies to Windows XP and its kin, which limit
application memory to 2 GB.  Some NT-based versions of Windows allow 3
GB of application space to be allocated, but I believe the
per-application limit of 2 GB still applies.

This is closely linked with the 32-bit addressing scheme of the
hardware, which allows direct access to a maximum of 4 GB.