I need some help I am using an old pc and it's has 255w psu I recently buy Rx 460 and when I installed my GPU its work but when ever I play games like tomb raider 2013 or resident evil my pc freeze and doesn't work so i search and found compatible psu zebronic 450w should I buy or not and one more thing is that's a psu problem or anything else and last which volt uses GPU 12+ or 5+