Yep, just installed new OS (x64), which I did a ton of research on, and knew what I was getting into. Soon as I fired up bryce with my custom bench *.br5 file (which always takes 25sec.) it took 30sec. It shows up as emulated (*32 or something). Now knowing a little more bout bryce, unless you are doing VERY heavy renders, it will only use 50 to 80 cpu time. Again, running an app in background(or that heavy render) will result in 94 to 99 cpu time, a good savings. This post was to see and give people here using this program some insight to rendering faster with or without buying new hardware. As I didnt see posts here about time and bryce rendering, I did forum search for desmonema.br5 which came with my 5.5 that most should have to compare. I also now only have 15 max process run in background. Lots who spent time and money on their rigs should be obsessive bout the system as you could only get more enjoyment out of a faster system(and should I say stable system too:).