Hey TorQueMoD,
I came across a thread while looking into this that goes into a bit of detail regarding the difference between 32 and 64bit:
While the title of the post is not the same question, I believe some of the information that Ben Marsh gave is relevant here and will at least give you some more information regarding the difference between the two.
Let me know if you have any further questions and I can do my best to get the information for you.
Have a great day