I have the Gigabyte 2AC8 motherboard, I cant find info on it. The bestbuy specs say i have a pci expressx1 but yet i have the radeon 7450? So do I have a pci x16?
If the card is a discrete graphics card, yes. It is plugged into the slot that you will want to use for the new card. Haven't you opened the case to look yet? What resolution is your display? The higher the resolution, the more powerful the card needs to be.