Currently I have a Quadro FX 580 graphic card, which does job well for visual projects and rendering. However, for this days computer games it would struggle a lot and I'm thinking about getting extra graphic card like GTX 560 Ti and connect them via KVM switch to single monitor.
My motherboard which is P7P55D series support multiple graphic cards but I'm not sure would they work together or not and what kind of conflicts I might dealing with?