Graphics card heats up and GPU usage increases gradually

Hazerider

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Nov 5, 2015
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I have a Radeon R7 240 and have had it for a little over a year with no problems. A couple of days ago, I noticed games I could play normally before were now running unusually slowly and decided to check the temperature, which was at around 50º C (122º F). This seemed very high as it used to stay at around 30º C (86º F).

Restarting fixes it temporarily. After about half an hour of normal temperature it spikes back up within a matter of minutes and stays at a maximum of 53º C (127º F). Now, supposedly this isn't dangerously high, but it's still much higher than it should be (especially when idle) and the decrease performance is noticeable when I'm playing a game and not just using my browser.

Additionally, once it begins spiking, GPU usage seems very high. HWMonitor tells me it's at 90-94%, but that doesn't seem right as I have nothing running that could make it that high. CPU and disk usage seem totally normal. I've downloaded a program called Process Explorer to check what could be causing it, but nothing weird shows up. I thought it could be caused by a bitcoin miner, but I disconnected it from the Internet for about 5 minutes and nothing changed.

Right now I'm blaming it on dust and will try to clean it up as soon as I have the time, but I've had graphics cards overheat before and don't remember it affecting GPU usage, so I decided to make a thread just in case anyone knows what could be causing it. Thanks in advance.