I have the following running a MAC OS X and Win 7 Ultimate dual boot system with 2 distinct hard drives: Gigabyte X58A-UD3r ver 2.0, Bios FE LG SATA DVD/CD burner 2x WD Black Caviar SATA 7200 RPM hard drives 12 Gig Patriot Viper II, Sector 7 RAM (6x2GB chips) XFX 5850 OC Logitech C310 webcam I followed tonymacx86 iBoot & MultiBeast install and everything ran perfectly the first time. I left all RAM in during initial install. I used the FD bios version for my board. I needed to use Bootloader ATI Kabyl or else PC would not be able to load OS. I used Lnx2Mac for Ethernet. ** Initially ethernet didn't work in Win 7 - after I closed out of Win 7 I had to not just power off PC but I had to turn off power at power supply - I only had to do this once and now Win7 ethernet is perfect **. I can wake from sleep without a problem. Webcam is automatically detected and the microphone seems to work however when I tried to Skype friends, they couldn't hear me. All audio settings were confirmed. I connected an external mic and that is taking the place of the webcam mic. I'm getting GeekBench 32bit results at ~ 9400.