This is my first build and I have a ASRock 970 Extreme4 with an AMD FX-6300, I have just put the system together and have not yet purchased a GPU, my plan was to use the system casually until I have the money to buy a GPU. I noticed that there isn't a HDMI socket on the motherboard so can I use the system without a GPU? If so what cable will I need to connect up to my monitor/TV?