The other day I was playing a game and my PC shutoff. After troubleshooting I determined that my PC will boot without my RX 580 connected. My RX 460 works fine with my system. I have been using my RX 580 for about a month. I think it might be my power supply's output decreasing. My PSU is a Corsair CX650M and I have been using it everyday for about 9 months. I believe my system needs about a 550W. Could my PSU's max wattage decreased 100 watts in 9 months? Thanks!