Maxxuss Tips & Notes on Mac OS X 10.4.3 8F1099 x86: "You can find out about your CPU features using one of these methods:

* Under Windows with free tools like Everest or CPUZ. In Everest, navigate to 'Motherboard -> CPUID'. Also, Windows XP SP2 usually enables the NX and PAE features if present; open the system info panel and look for 'Physical Address Extension'.
* Under Linux with 'cat /proc/cpuinfo'
* Under Mac OS X wth 'sysctl -a machdep.cpu' and 'sysctl -a hw'"