I have a MSI r9 280 (non-x) and I bought it just a few months ago. It was working fine. It would idle around 30-33 Celsius and then when I would play games it would get up to about 55 or 57 (for Crysis 2). I recently got battlefield 3 and when I finished playing the campaign for the first time my gpu temp was at 80 celsius. That's the highest I had ever seen it. The fans (which I keep on auto) were only running at 30%. Ever since then my gpu now idles at 36-40 and when I play games it gets up to 70 Celsius regularly. Also now my gpu usage looks like a mountain range. It's just sitting at zero percent and then it randomly spikes up to 75. I thought maybe my power supply (which was experiencing some coil whine) was the issue for the heat so I have it sitting outside the case powering the computer (to give the gpu more room to breathe) I also tried to dust out the case and that doesn't seem to have helped either. I have no idea what's going on and I don't want to request an RMA from MSI because then I don't have a computer for two weeks. Any help would be appreciated. 
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