Originally Posted by elmalloc
any recommendations on what's required? what CPU and graphics card would be overkill? how much RAM?
It still requires a pretty powerful system. I'm not 100% sure, but I believe that CPU is more important than GPU. So far, I'm getting the best results with the Direct3D11 setup, so you'll probably want a GPU that supports that.
That being said, I'm running at 3x resolution internally, with 2xAA and 2xAF, on a 1080p display, and so far, with the Gamecube games I've tried, it's running fullspeed (as long as I don't use the DSP LLE options for audio, which I believe give better sound but run much slower). That's on a Q6600, 8GB RAM, and a AMD 6850 all running stock, so I'd have to imagine more recent systems would run it even better.
I haven't tried any Wii games yet, since as far as I can tell, you need to use the Microsoft bluetooth stack to use a Wii remote, and my Bluetooth 3.0 dongle uses a Motorola stack.