Peter,
Try this:
Hold the Shift key down while you click on Analyze settings in the help menu.
See what the number are.
That is telling you how much ram QU has at its disposal
Fred

As in the quote above, the numbers show how much RAM is available to Qimage to use right now.

Fred

Yes, the 16 gigs and 64 bit

Below I posted the same screen from wife's 32 bit machine with 4. gigs of Ram.
The numbers are not reflecting the ram in the machine, but what QU has available and what it needs to run based on its written parameters.
Right now, as written, approximate max size of a file that QU can open is around 1.2 gigs, as long as there is enough ram on hand that QU has all it can use.
The virtual paging is dependent on how the program is written.  I know that in many situations while developing QU, the sweating and hand wringing was due to finding the right balance between time to open an image vs impractical speed.
Anything more technical, have to refer to Mike.
Fred

Thank you for the explanation Mike.

Peter

Hi Peter,

With Qimage One, we wanted a simple interface that produces optimal visual results without the user having to get into settings like "overdrive" or various resampling methods.  Honestly, we didn't even want users to have to contemplate the implications of changing settings like that in Qimage One.  Things like the 1200/1440 PPI overdrive are really not applicable to normal photo prints and that feature only comes into play for prints that might be examined under magnification such as possibly aerial photography or maybe something like microfilm.

Having said that, we have been looking into the possibility of a setting in Qimage One that would unlock some "super user" settings like overdrive and interpolation methods for the power users.  Stay tuned: we're alway improving the software!

Regards,
Mike