Now this might be a noob question .
I know hdmi port is used to watch hd videos on an lcd or hd monitor.
Now that can be done using hdmi port at the back panel then what's the use of hdmi port on gc ?
To increase hdmi ports ? Wouldn't it look odd with a side of your cabinet open and a wire coming out of it connected to TV ?
Many computers come with a motherboard that has an integrated video chip, which may support HDMI output, but also with a discreet video card which also supports HDMI. Generally speaking, only one or the other is active at a time.