My r9 270x has recently been freezing no matter what I am doing once it reaches around 50 degrees celsius. This has been happening a lot lately and never before now, I have had it since may. Any ways to fix this?? I already re-seated gpu and installed drivers back. My psu is a 650 watt Rosewill hive and i ran prime 95 on my cpu and it works fine. I also tested my 2 4gb ram sticks with windows memory check.