So my friend needs a power supply for his build he has 2 hard drives, an fx-6300, basic peripherals(mouse, keyboard, monitor, usb headset), and soon an r9 270 (possibly r9 270x). Was wondering what power supply he should get since his old one will not be able to power his system with the new graphics card. would prefer it costing no more than $100, the cheaper the better (as long as it will still handle the load without getting crazy loud).