All of the component cables I use are a true 75ohm with true 75ohm connectors. You can get by on less but most respected authorities all seem to agree that 75ohms is the way to go. I posted a bunch of video bandwidth stuff not that long ago. I think you can get by with as little as 35 but like I said, why get by when for not a lot of extra cost you can run true 75ohm cables!