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Thread: AMD/ATi HD4850/4870 Fan Fix!

  1. #1
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    AMD/ATi HD4850/4870 Fan Fix!


    HD4850/4870 Fan Fix!



    if you make a profile in catalyst after turning on Overdrive( make sure clock and memory settings are correct). You can then go to the file "C:\Users\Bretware(username)\AppData\Local\ATI\ACE \Bretw are. XML. the xml file will have the same name as the catalyst profile you saved. right click and hit edit.

    <Feature name="FanSpeedAlgorithm_0">
    <Property name="FanSpeedAlgorithm" value="Manual" />
    </Feature>
    <Feature name="FanSpeedRPMTarget_0">
    <Property name="Want" value="0" />
    </Feature>
    <Feature name="FanSpeedPercentTarget_0">
    <Property name="Want" value="65" />

    Change the value to "manual" and Want value to "65"

    Save the file then reload your profile in catalyst.


    65&#37; seemed perfect for me, 70% was loud but you may need it if your case has poor air flow.


    You will have to select the profile everytime you start the computer, but it will work until there is a fix or better info so i can figure how to change the auto target temp.



    Good Luck ,bretware

    Source


    windows XP >> C:\Documents and Settings\username \Local Settings\Application Data\ATI\ACE\profile created .XML

    windows vista >> C:\Users\username\AppData\Local\ATI\ACE\profile created .XML




    PS: under the folder options in the control panel select show hidden files and folders






    -----&#180;&#180;-----



    Feedback:


    Amazing! Thank you very much! It worked perfectly, and within the first minute the temps dropped from 82C to 52C running on 70% speed (which isn't that loud)


    Wow, well done bretware!

    Set mine at 65% and it dropped temps by 22C...




    Works great, set 35% fan speed, idle's at 45-46c now.

    With the fan at only 35%, quite quiet, I loaded up FurRenderingBenchmark and set it for stability test, after 10 minutes temperature topped out at 81c. This is fantastic, especially for only 35% speed on a stock fan and running Fur benchmark. And this was with 790MHz on the core.


    regards
    Last edited by mascaras; 06-29-2008 at 02:38 PM.

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  2. #2
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    This will save some 4870s for sure

    Nice find, Mas

    Perkam

  3. #3
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    Very nice, I didn't think it was possible for the card to be that hot or the heatsink to possibly be that poor. So now it's about as good as the gts g92's heatsink fan combo getting around 50's with 70% fan speed.

    Now I wonder how that compares to an HR03-GT on a similar card setup.

  4. #4
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    Quote Originally Posted by Caveman787 View Post
    Very nice, I didn't think it was possible for the card to be that hot or the heatsink to possibly be that poor. So now it's about as good as the gts g92's heatsink fan combo getting around 50's with 70% fan speed.

    Now I wonder how that compares to an HR03-GT on a similar card setup.
    Using an HR03-GT myself with 92mm fan, virtually silent operation, idle temps are 43-45c and load (2-3 hours of crysis on 1920x1200 very high dx10) topped out at 55c-57c, this is at 790/2000.

  5. #5
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    Hmm I would think a 120mm fan wouldn't take up much more space and would be able to proved lower temps while being quieter.

    But nice temps none the less we may be seeing overclocking heaven soon.

  6. #6
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    nice maybe this will prevent the memory from dying on the 4870s
    Quote Originally Posted by Hans de Vries View Post

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    now I am confuse what consider flashing the bios? cause ppl flashed their bios the card die.

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  8. #8
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    Quote Originally Posted by mr2sw21 View Post
    now I am confuse what consider flashing the bios? cause ppl flashed their bios the card die.
    Don't flash the bios on ANY of the cards as of yet.

    Perkam

  9. #9
    Quote Originally Posted by AliG View Post
    nice maybe this will prevent the memory from dying on the 4870s
    No.....not messing around with the BIOS or crazy overclocks will make sure the card does not die.

    This is purely a fan speed fix through a modified Catalyst profile used to keep temperatures down on the cards since people don't like seeing 80C+ on their GPUs. Even though it is well within the normal operating range of the R770 core.

  10. #10
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    Quote Originally Posted by perkam View Post
    Don't flash the bios on ANY of the cards as of yet.

    Perkam
    does rivertune consider flashing bios? or just use the Fan control part of the rivertune?

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  11. #11
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    Quote Originally Posted by mr2sw21 View Post
    does rivertune consider flashing bios? or just use the Fan control part of the rivertune?

    Rivatuner doesnt support hd4000 series yet!

    if you want change the FAN speed without messing around with the Bios just use the method in the 1st post

    regards
    Last edited by mascaras; 06-29-2008 at 09:00 AM.

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  12. #12
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    But why worry about the temps? Just because it feels better to look at 50C instead of 80C? Its not an issue, only illusional in the mind.
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    That's not true at all. The hotter the card the shorter it's life just like processor's.

    Plus the cooler the component the less heat thats gonna be causing your case to turn into a furnace

  14. #14
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    Modifying the profile worked awesome. You can create a second profile with slower speeds if the noise is too much when not gaming.

    As for why? A cooler chip is a happier chip. It's free, it's easy, and it certainly couldn't hurt. Pretty much a no brainer.
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    Yeah, ATI should have done that in the first place. 30&#37; speed rather than 10% at idle would still be very quiet and keep it cooler running, and like 65% at load (with a 55-60 degree target limit) would actually REDUCE the power consumption of the chip (besides increasing the longevity and overclockability).

    The power consumption is not that good with 4870's, actually exceeding the 8800GTX by a few watts under max load. If it was kept at 55 or 60 degrees, that would shave at least a dozen watts off the chip, as there would be less power leakage.

    On Penryns, a 20 degree difference saves like more than 40 watts when feeding that thing 1.5v, and does wonders for overclockability.

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    Quote Originally Posted by Shintai View Post
    But why worry about the temps? Just because it feels better to look at 50C instead of 80C? Its not an issue, only illusional in the mind.
    i think wot he means is ....is it working properly or just reading an offset temp !!

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    Quote Originally Posted by Bo_Fox View Post
    Yeah, ATI should have done that in the first place. 30% speed rather than 10% at idle would still be very quiet and keep it cooler running, and like 65% at load (with a 55-60 degree target limit) would actually REDUCE the power consumption of the chip (besides increasing the longevity and overclockability).

    The power consumption is not that good with 4870's, actually exceeding the 8800GTX by a few watts under max load. If it was kept at 55 or 60 degrees, that would shave at least a dozen watts off the chip, as there would be less power leakage.

    On Penryns, a 20 degree difference saves like more than 40 watts when feeding that thing 1.5v, and does wonders for overclockability.
    That's just nonsense. The card does NOT consume less power if it is cooler...
    It will consume maybe 1W more, because the fan spins faster, but it will never start producing less heat by being cooler, it can just get rid of the heat easier, making it cooler...
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  18. #18
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    Quote Originally Posted by Dragy2k View Post
    i think wot he means is ....is it working properly or just reading an offset temp !!
    no this is not whats happening, better temps are better temps

  19. #19
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    nice find

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    i'm not aware of 4000 series fan issues - what's it about? someone like to enlighten me?
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  21. #21
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    Quote Originally Posted by Caveman787 View Post
    That's not true at all. The hotter the card the shorter it's life just like processor's.

    Plus the cooler the component the less heat thats gonna be causing your case to turn into a furnace
    Wrongo, instead of dumping less hotter air into your case, your dumping MORE warmer air. The amount of heat being dumped into the case will still be the same
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  22. #22
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    Quote Originally Posted by [XC] Lead Head View Post
    Wrongo, instead of dumping less hotter air into your case, your dumping MORE warmer air. The amount of heat being dumped into the case will still be the same
    I don't think that's the case with a 4870 though, only with a 4850, seeing as the first one exhausts the hot air out of the back. So the hotter the 4870 is, the more heat gets dumped inside the case.
    But the 4850 is a different story, all the heat gets dumped inside the case.
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  23. #23
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    Awesome find mascaras, much thanks for sharing this!! My cards are happier!
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  24. #24
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    droppe mine 35 degrees C on 55 percent THANX


    EDIT: ok stopped dropping around 46c from 84 wow
    Last edited by tylerw13; 06-29-2008 at 11:16 AM.

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    why not just blow the copper heatsink on rightside of the fan with a fan?
    it works, making idle temps about 55 degrees celsius while 100&#37; fan just make more 10 degrees drop with a loud noise
    anyway thanks, it makes my card tells its blow
    Last edited by XCheater; 06-29-2008 at 11:17 AM.

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