I posted a thread about this same situation a long time ago, but I still need help deciding. My machine is a gateway DX-4300 15E. My PSU is 300W, the model is Liteon PS-5301-08HA. I want to upgrade my Graphics card, currently an Low Profile ATI 5570, but I honsetly don't know which power supply to choose, and since i've never worked with PSUS before, I'm worried it won't fit. My budget is 50-100, I just want something that can support a 125$ graphics card stabily without breaking.