Being a recent convert to the Mac (as of mid-January), and previous to that a diehard PC user, I couldn't imagine how efficient OS X was, and how incredibly powerful this new Mac Pro is...8 cores? I never thought I'd ever use all eight cores simultaneously like this.
These stats include me running: Photoshop, Lightroom, playing a DVD, encoding a separate DVD with Handbrake, Firefox with 8 tabs, Adium, Yahoo Messenger, VLC, Time Machine backup, GarageSale, and to top it off, I've been running Folding@Home continually since the last time I rebooted (Team MacRumors!
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With all that, the Mac Pro is still zippy, absolutely NO slowdown..and look how much RAM I still have...here are the stats:

All I have to say is.....this machine is a beast, and I could never be happy using an inefficient OS like Windows again
-Bryan
These stats include me running: Photoshop, Lightroom, playing a DVD, encoding a separate DVD with Handbrake, Firefox with 8 tabs, Adium, Yahoo Messenger, VLC, Time Machine backup, GarageSale, and to top it off, I've been running Folding@Home continually since the last time I rebooted (Team MacRumors!
With all that, the Mac Pro is still zippy, absolutely NO slowdown..and look how much RAM I still have...here are the stats:

All I have to say is.....this machine is a beast, and I could never be happy using an inefficient OS like Windows again
-Bryan