I have a nice graphic card installed on my desktop but the 3D performance is not that good. I upgraded from ATI-Raedeon HD 5450 Series 2 GB DDR3 to ASUS NVIDIA Ge Force GT 630 4 GB DDR3. I wanted to install the old graphic card also but my motherboard didn't have 2 graphics slots. Then, I thought to look out for a new motherboard but it is for $300 which is too expensive. Then, I found the PCI to PCI-E converter cable. Will both the graphic cards be used together giving the output on one screen?