I just recently upgraded to a 64 bit computer & operating system. I then downloaded the software I use from my creative cloud membership.
I noticed that at least 3 of the programs Photoshop CC, InDesign CC, and Illustrator CC downloaded both the 64 bit and 32 bit versions. I would be interested to know when I should use the 64 bit version and if there are occasions when the 32 bit should be used.
My computer is a PC and I am running the Window 7 Professional 64 bit operating system.
Avoid the 32 bit program if possible as it only allows 3.3 gigs of RAM. Not really usable for CC. There may be a few old 3rd party filters that only run in 32 bit mode.