Capture Card
A capture card is a hardware device that allows you to record and stream the video signals from your PC. Leading capture card brands include Elgato, Asus and Razer, offering both internal PCIe cards and external USB devices.
If you’re only intending on streaming PC games and your PC is powerful enough to both play and process the stream, then a capture card isn’t strictly necessary, however we would advise installing one for the best experience as the card offloads streaming from the CPU and GPU. Some professional streamers go a stage further and use a two PC set-up - one PC to play the game, and a second PC, armed with a streaming card, to capture the signal over HDMI. The diagram below shows how a dual PC setup would operate.
It is also possible to stream from a games console too. You can learn more about this and PCIe capture card installation by viewing our ELGATO HD60 SET UP VIDEO, presented by Rage Darling.