Ok, So I was curious to see what the difference would be between 10.5.1 to 10.5.2 2 gigs of RAM to 6 gigs of RAM So, when I first got the mac pro I ran both Geekbench and Xbench. I haven't tallied the Geekbench results, but the overall scores go like this: 10.5.1 |2 gigs RAM = 7324 | Memory Score = 2486 10.5.2 |6 gigs RAM = 7793 | Memory Score = 2693 I forgot to run Geekbench with 10.5.2 and 2 gigs of RAM. Sorry. Attached are the numbers for Xbench. I also graphed them in Numbers. For all those who enjoy this stuff, here you go. .. If someone notices something that seems jacked up with these numbers for this system in its various states of configuration, PLEASE let me know!! I'm not savvy with these benchmarking programs. I just thought some folks out there would like to see the info. ** The chart can't fit in all the chart titles, so you'll have to look at the raw data to interpret what belongs to what. Feedback always appreciated. I'm off to finish loading some Windows programs and my games, and then move that partition to the 400 gig drive, and then tell VMware where to go git 'er done!