I have desktop and its specs are intel i3, 4gb ram and its running nvidia 610 geforce 2gb graphic card. I have pci 2.0 bus. I got to know through your posts that pci 3.0 graphic cards run on pci 2.0 with no performance loss. But when i checked the backward connection pins of pci 2.0 bus, but they are different from pci 3.0. So how shall i connect my monitor to 3.0 pci as the connection pins are different. Please help me out.