Yes, they're compatible. It's a standard 3.5mm jack on the Soundsticks iii (non-wireless). You can connect them to your earphone port.
🙂 They're good speakers from what I've read, also. If you can go any higher, I hear even better things about the AudioEngine A2+ speakers.
That message is due to Optimus. This isn't something you can get around; the laptop defaults to using the Intel CPU for it's graphics output in Windows, and any external monitors you connect would run off of the Intel chip as well (they're hard wired to it). The NVidia GPU kicks in on programs that you specify.
Hopefully that helps!
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