I have access to both platforms, including a dual 2.5Gig G5 and an Athlon 64. The dual G5 is a real render monster. It's almost twice as fast as the AMD64! (in all fairness, this puts ONE G5 at the same level as ONE AMD64). The G5 is a tad pricey, but it's a very nice machine. Vue runs fine on both. Hope that helps.