The ProTV Stereo card from Formac will, and it even will do the aspect ratio. Although I have this card and it conflicts with some of my software I have running on my new G4. I have narrowed it to either one of these things: Palm desktop extension, epson launcher, control strip extension, or the time sync extension. And its not just a crash which wouldn't be that bad but a hard lock-up only fixedable by the restart button on the case.