LR2 performance on Mac: 32-bit or 64-bit install

[RobL]

Am I best off installing LR2 on a Mac:
1. As a windows XP application running through VMWare Fusion (as a native DOS app)
2. As an OS 1'.5 32-bit application
3. As an OS 1'.5 64-bit application (the option exists to "run as a 64-bit app")

I am running this on an iMac (3.'6Ghz, 4gb RAM, 1TB hard-drive).

 

[Mark Sirota]

Probably Option 3, though Option 2 may be faster if you're not working with large files (JPEGs instead of raw files, for example).

 

[Victoria Bampton]

The nice thing about the Mac version is that it's only a checkbox - so you can install it, and then try it on 32-bit, and then try it on 64-bit, and see which is faster for your workflow.