Hello all! I am currently building a semi-powerful work house of a Mac mini, and am looking at getting the Akitio Node eGPU enclosure and an Sapphire Pulse RX 570. My only question is, will the 400 Watt PSU on the Node be powerful enough to provide stable energy to the card? On the AMD website, it says it's recommended to have a 450 Watt PSU.