Post you results.

MY rig:

Processor: Intel Pentium D 805 2.66GHz ovk@3GHz
Motherboard: Asus P5LD2 REV 1.0
Memory: 4G DDR2 667MHz Corsair XMS2(ram is @800MHz but a can't run at 800MHz cause of my CPU)
Graphic card: Asus ATI Radeon X1600 PRO Silent 256Mb
Display: Samsung SyncMaster 223BW 22"
DVD-Rom: Asus DRW-1814BLT SATA
Hard drives: 1. 500Gb Hitachi SATA II, 2. 320Gb Seagate SATA II
Keyboard and Mouse: USB
OS1: Retail Mac OS X Leopard 10.5.8
OS2: Windows 7 x64 build 7127

Results:

MAC:


Integer (Score: 1975)
Floating Point (Score: 2777)
Memory (Score: 1725)
Stream (Score: 1410)

WIN:


Integer Score 2390
Floating Point Score 1897
Memory Score 1339
Stream Score 1402