Final answer:
To connect a gaming PC to a TV for 4K/60fps gaming, an HDMI cable is needed, specifically with HDMI 2.0 or better for higher bandwidth.
Step-by-step explanation:
If you are looking to connect a gaming PC capable of 4K/60fps gaming to your TV, the interface needed for data transmission is an HDMI cable. HDMI, which stands for High-Definition Multimedia Interface, is specifically designed to handle high-definition video and audio signals in a single cable. For 4K resolution at 60 frames per second, you need at least HDMI 2.0, but preferable HDMI 2.1 for higher bandwidth, which also offers features like Dynamic HDR and support for higher refresh rates, ideal for future-proofing your setup.