Well, pretty self explanatory, yesterday my graphics card randomly started overheating a lot. I have a Radeon X800XL, and when i got it it would have that problem with the stock fan, so i replaced it. And for over a year nothing happened but now the card is getting really hot again. I dusted out my computer to the best of my ability without taking it apart, I took out the card opened up the fan cover and dusted that out, and i started keeping the computer slightly open. Nothing works, after about half an hour of gameplay it starts to heat up again, and I get the usual squares and lines on the monitor. I'm honestly out of ideas here...
Hmmm. Well. Check to see if you have any overclocking programs running on it. Uhh....check the airflow around the card. See how much dust is on the fan. And if all else fails get a better heatsink/fan combo. You can also lower the resolution. That may be messing it up. Thats about all I can think of right now.
Indeed, the problem is, i don't understand what the catalyst of this problem was. I changed absolutely nothing on my computer, only contemplated getting a new graphics card. :p
The only major problem I can think of is bad circulation of air. I'd go with the cheap solution up front (i.e. getting a compatable heatsink/fan for your GC) and if that doesn't help, get a new GC. I honestly have never heard of a GC suddenly start overheating without an obvious reason. Usually its due to OCing, dust, fan failure, etc.
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According to SpeedFan, which I just downloaded my temperatures are: CPU: 60C Internal Temp: 36C Remote Temp: 58C HD0: 41C The CPU and remote temp have a little flame next to them. Doesn't look happy.
I would get a new heatsink/fan combo for your GC, a new powerful fan to install on the case, a heatsink/fan for the CPU. The more air flow you can get the better. But make sure you don't have to many cross flows as that can cause turbulence and can cause some areas of your comp to get hotter than others.
A new fan you say? I have, unfortunately no clue as to anything about them, I couldn't pick out a good compatible deal for my life. Ill try to do some research, but for now I hope that the 100% Fan Duty cycle I just implemented with RivaTuner will keep me alive for a while... Ill go test it on Portal.
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Well, I already do have a custom VGA fan, it also came with tiny little heatsinks to mount on the card, which is why I don't understand the problem, it should have, and was doing it's job untill now. I attatched a couple of pictures, three of the fan with the card, and two of my current airflow. If you see a problem with either, tell me. Also, the fan is actually spinning, i just took the photos on high enough shutter speed that you can't tell.