* The main advantage for 64-bit is RAM / Performance.
* You can use more than 4GB of RAM.
* You can take advantage of 64-bit computing power.. i.e. CPU, GPU, etc.
* The only downside is some plug-in manufacturers do not support 64-bit.
- CameraRaw 7 CameraProfiles
- CameraRaw 7 LensProfiles
If you need the fonts offered during installation for CS6