Not sure, I fully understand you, But the list I linked are for CPU (Processors, which can be Intel or AMD primarily) and not graphic cards. In regards to graphic cards are you sure that its not ATI vs Nvidia? They are the ones making almost all the GPUs? Sort of like AMD vs Intel when it comes to processors? Usually, at least as far as I know, the processor shouldn't interfere with whether you can use your graphic card for rendering or not. That would surprise me a lot to be honest. But I might be wrong, is it a known problem that using an AMD processor screws up the graphic card in Poser?