Vista x64 on Mac Pro - Worth it?

[dimon1408]

Hi,
I've got a kick-ass 8-core Mac Pro and now I've come across a dilemma :) The problem is, I'm trying to run GTA IV but it's just painfully slow through Boot Camp on my XP SP3 x32. I've got a licensed Vista x64 disk, and I am thinking about using it. Can the regulars here recommend it or not? Do you think I'll have a better gaming experience? :D

PS. - I'm not using x32 Vista on my Mac because as I go into a game or even watch a Youtube video, the sound glitches and slows for a few seconds.

[Consultant]

http://www.tomshardware.com/reviews/64-bit-vista-gaming,2250-10.html

The irony is that the graphic detail in this console port isn’t exactly groundbreaking, yet it’s pushing our system harder that more notorious titles like Crysis.

[dimon1408]

http://www.tomshardware.com/reviews/64-bit-vista-gaming,2250-10.html

This is true, yet somehow on my other PC (note - actually PC, came with Vista x32) the game manages to run so perfectly and smoothly on the same settings I use with my Mac. So it's something with the OS...
It's also kinda ironic that they get better fps on x32 machines...