Schxeler :
It has a PCI-3.0 connector im not sure if it will fit on the mother board with all the cords,Im new to PC so im trying to make a good one.
Which motherboard is it? Modern graphics cards need x16 PCIe lanes, though there isn't currently much difference between the 2.0 and 3.0 standard. In order to power the GPU, you will plug in the PCIe cables from your power supply.