Respuesta :
Usually a graphics card would be plugged in manually through a PCI-e express slot on the motherboard. But to give the card enough power (based on how powerful the card is) you would use a 6 pin or an 8 pin power connector.
In what world is 1GB of Vram is fast on a GPU? Unless you're trying to watch video in 1080p 30fps 1GB is getting you nowhere. I know i'm getting off topic but the answer is a PCIe cable.