I'm currently using a M7NCG w/2400 mobile on the Opus without a prob. I also power my Xenarc, Slim DVD, 3.5" HDD, USB Wifi, & USB BT Dongle.
The NForce chipset is great. I've added 800x480 and it works fine. The audio is running 5.1 analog out to my amps which sounds great as well.