I have a 47 inch LG tv. It's 1080p and 120Hz. Do I need to buy a HDMI cable for my Xbox 360?
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Yes, you will need an HDMI (High Definition Multimedia Interface) cable to view output from your system in HD. But that's not the only cable you can use there is something called a component cable, (red, green and blue cables) that will also give you video output in HD.