The multimedia keys are application dependent. Gnome multimedia apps appear to have better support. For example I run Totem and Goobox for media playback (under kde as my default DT).

Sound is easy if you add the openSUSE Audio Updates repo to Yast and install alsa-drivers-kmp-'your kernel'. Make sure the repo is for your kernel version.

The fingerprint reader is not supported as yet although oSUSE recognises the hardware.

I don't think the cpu matters as much as the GPU. I have had no problems with the nvidia setup here.

Webcam is fine with kopete, ekiga, or most apps that support v4l2.

Wifi is fine. Using it here with knetworkmanager.

Hope this helps...