HIS Radeon 4870HD Temperature Issues

I'm running an HIS Radeon 4807HD (http://images.highspeedbackbone.net/skuimages/large/H231-4874-Main-JH.jpg). I've been noticing that under duress (Skyrim, etc.) my PC would crash so I immediately assumed the GPU was at fault. According to the temperature, it's running 95C @ 60% fan speed at idle and close to 120C under load.

I'm fairly certain all fans are in working order, but I want to take the card apart, clean it out and possible replace the thermal paste on the core. Does anyone have take apart instructions for the cover? I can't seem to get it to come off.

That being said, are there any other suggestions to reduce heat? I'm in a HAF 900 case and it's pretty clean and there aren't cable bundles in the way. Air flow should be good.
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More about radeon 4870hd temperature issues
  1. Hi :)

    Just blow it out with compressed air....it will make a big difference...

    Don't touch the core...they rarely work afterwards...lol

    All the best Brett :)
  2. Don't worry about airflow too much. Solve thermal paste and you'll drop under 75 under full load.

    Make sure that your GPU fan is at 100% when temp goes over 70C. Those fans should work 100% on full load, not 60%.

    http://www.productwiki.com/upload/images/his_radeon_hd_4870.jpg
    Is this one yours?

    You should have 13 screews down there. Remove them and try to gently twist cooler, it's probably stuck there because of burned thermal compound. Or you can run it a bit in your PC and then disasemble it because warmer compound is, easier will cooler go.
  3. Brett928S2 said:
    Hi :)

    Just blow it out with compressed air....it will make a big difference...

    Don't touch the core...they rarely work afterwards...lol

    All the best Brett :)

    I've tried that. The card is covered by a plastic cover. The compressed air can only reach so far into it.


    Anonymous said:
    Don't worry about airflow too much. Solve thermal paste and you'll drop under 75 under full load.

    Make sure that your GPU fan is at 100% when temp goes over 70C. Those fans should work 100% on full load, not 60%.

    http://www.productwiki.com/upload/images/his_radeon_hd_4870.jpg
    Is this one yours?

    You should have 13 screews down there. Remove them and try to gently twist cooler, it's probably stuck there because of burned thermal compound. Or you can run it a bit in your PC and then disasemble it because warmer compound is, easier will cooler go.
    The fan speed is automatic. It increases with the temperature. It runs at 60% normally at idle.

    No, that's not my card. I posted the link in the original post. Here it is again (http://images.highspeedbackbone.net/skuimages/large/H231-4874-Main-JH.jpg).
  4. Hi,

    Those are same cards, same models, same fans only different sticker.
  5. The side is clear(OK transparent red), you should be able to see if you have a dust build up.

    The fins are not bent, its just distortion from the plastic, but you should see if you have build up by looking at this part of the card for sure.


    Best to listen to Brett928S2 about NOT taking it apart. They have thermal pads on parts of the card(memory and vrms) to contact the heatsink(they are not thermal paste and once they are squished into place, they do not come off and go back well. They would almost certainly require replacement.)

    You should be able to blast the compressed air from the outlet side of things(above the DVI and S-video ports). This will dislodge anything stuck on the fan side of the heatsink. Then blast air from the fan side. With a back and forth pattern of compressed air blasting, you should be able to get it fairly clean without having to remove the heatsink.
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