If you are like me, someone who would buy and utilize a mac pro to get optimal performance out of your Pro Tools Rig, check this thread out. I just got off the line with the Head Support Specialist For Computer Compatibility Issues For Digi-Design/Pro Tools. Let me sidebar and say that I have been driving myself mad in debating over which Mac Pro To Get for Pro Tools. And I now have the answers. It turns out that Support specialist stated that Pro Tools is having some real issues with the simultaneous/hyper threading for the nehalem chips. Due to the fact that it is now technically a virtual 16 cores. Now here is the for instance (Again this is straight from the source and not just my opinion) If you have One plug in on a track the nehalems perform fine, the second you stack plug in's the performance of the nehalem drops considerably and does not compare to the previous generation 08 mac pro. He also stated that this update for this is not in the foreseeable future. Pro Tools 8, on the 08's is running fantastic. And despite what some opinionated people think when you Pro Tools benefits GREATLY from 8 cores, especially when you start stacking plug-ins (And who doesn't stack plug-ins! in '09) So there it is. 08's till they get their #@$! straight. It may or may not be useful information to alll of you out there. But it was priceless to me so I thought I would share my results. Now does anybody know why mac does not have any clearance surplus for the 08 Mac Pro's on the site?