Sorry for being vague;
The issue: When trying to download/veiw large file, over 39MB ebook file in my case; iPad2 cam with small pop-up window: Not enough memory.
I checked General > About > Diagnostics & Usage > Diagnostic & Usage Data.
There are crash reports( e.g LatestCrash-CitrixReceiver! where happens when I was trying to use Citrix), including many,
when I choose one of these reports I see another crash report: with information about ipad,...
plus some information about different page files;
e.g. Free, Active, Inactive,....
SInce the LowMemory reports coincides with when I was downloading the lorge file and since I had the pop up menu; I guess there is something to do with memory usage of the iPad. I could not find any info about the physical memory, size or usage.
You may try to send yourself a 39MB file( word,...which can be openned) and see if it happes on your iPad.
Then we may find a solid answer for my question.
iPhone (June 2007): 128MB
iPhone 3G (July 2008): 128MB
iPhone 3GS (June 2009): 256MB
iPhone 4 (June 2010): 512MB
iPhone 4S (October 2011): 512MB
iPhone 5 (September 2012): 1GB
1st generation (September 2007): 128MB
2nd generation (September 2008): 128MB
3rd generation (September 2009): 256MB
4th generation (September 2010): 256MB
5th generation (October 2012): 512MB
1st generation (April 2010): 256MB
iPad 2 (2011): 512MB
3rd generation (March 2012): 1GB
4th generation (November 2012): 1GB
1st generation (November 2012): 512MB
iOS doesn't use swap space, therefore, only RAM will be available to processes. (That said, iOS does support paging executables.)