Advantage of Blackmagic card


I realise that a lot of people talking about working with a Blackmagic card. I am wondering what is the advantage of using a Blackmagic card? I currently have a second graphic card in my computer and putting the video out through that card on a computer moitor. It seems to work fine, so why would I want to buy a Blackmagic card?

Best wishes,


If you are on OS X, it’s the only way to get a smooth, stutter free playback on a multi monitor system.

The advantage is that the playback is smoother and interlaced video is reproduced correctly, which is impossible to achieve with any graphics card, if that is important to you, and it has a HD-SDI output which is important if you are working within a professional broadcast infrastructure.
Apart from that, there are no really significant advantages.

Ok thank you that is very interesting!