I currently have a Seasonic X560 installed in my Node. You'll most likely be fine if the GPU you're installing is 9.5inches/241mm or shorter. If the card is any longer it'll come in contact with one of the PCIE cables coming out of the power supply. I'm currently in the process of deciding which will be my next power supply myself, so I can fit a larger graphics card. Play it safe and purchase a different PSU unless you know you'll be using a short GPU.
3/12/15 at 3:51pm