Some 3DS specs (cards maximun size)

[twesterm]

Viper1 said:

manuel said:

Mr.Metralha said:

 but now whats all that storage for is the question.

 

Copy protection, mandatory system updates...

Also allows for less need for texture and audio compression, higher resolution textures, high end voice overs and more.

Just because you have a lot of space doesn't mean you can go crazy with large textures.  You may have the space to make everything a 1024x1024 or 2048x2048 but even on current consoles those take A LOT of memory. 

On a handheld you probably will rarely need to go over 512x512 and even 256x256 will still be fine and both of those take very little space and memory.