. I benched tested the new GTX 285 Mac Edition and the 8800 GT Mac Edition using X-Plane. I used the same version (9.22 rc1) for both OS X 10.5.7 and Boot Camp WinXP. I flew in North Dakota in order to eliminate as many objects and scenery as possible thereby making X-Plane as efficient as possible. The flight was from Grand Forks (KGFK) to Crookston (KCKN). The length of the flight is 23.59 nautical miles and took 7 1/2 minutes. I used a King Air B200 with a ground speed of 240 knots. The renderings (1600 x 1200, 8xAA) and weather was exactly the same in both OS X and WinXP. I flew three times for each video card and each operating system for a total of 12 flights. I averaged out the fps. The 8800 GT Mac Edition is 2.3 times faster running under Boot Camp (WinXP) than the same 8800 GT running under Mac OS X 10.5.7. Running under the same OS (Mac OS X 10.5.7), the GTX 285 Mac Edition is 2.7 times faster than the 8800 GT Mac Edition. Running under the same OS (Boot Camp WinXP), the GTX 285 Mac Edition is 1.6 times faster than the 8800 GT Mac Edition. My conclusion is the NVIDIA cards run much faster under Windows than they do with Mac OS X. .