Quote Originally Posted by Wilbur
FFS.

One Copy of WoW.

Increased performance from load times and texture loading.

Reason? Cache, on your CPU, RAM and HARD DRIVE.

This is basic computing knowledge guys.
I am going to disagree. In theory, what you are arguing makes sense. But in practice, I disagree as to the extent those caches make a difference for WoW. Only testing will reveal what is truly best and there are a lot of variables to consider. I do reserve the right to be wrong about this as I have not tested software setups very well.