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GPU Temperature #1, #2 and #3, what do they mean for the 4800 series?

Discussion in 'GPU-Z' started by EastCoasthandle, Jul 31, 2008.

  1. EastCoasthandle

    EastCoasthandle New Member

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    Does anyone know what:
    GPU Temperature #1
    GPU Temperature #2
    GPU Temperature #3
    actually means for a 4870? Did I overlook/miss a thread/post that already discussed this?
  2. dark2099

    dark2099

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    I think they are the GPU, MEM, and VRM temps. I think erocker knows, obviously w1izzard.
    EastCoasthandle says thanks.
  3. EastCoasthandle

    EastCoasthandle New Member

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    Thanks for the input
  4. erocker

    erocker Super Moderator Staff Member

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    They are all off of the GPU.;)
    EastCoasthandle says thanks.
  5. EastCoasthandle

    EastCoasthandle New Member

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    EDIT:
    SO
    it's GPU #1
    Mem #2
    VRM #3
  6. W1zzard

    W1zzard Administrator Staff Member

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    no ... there are three sensors inside the gpu die at different strategic locations
  7. tomatomanz New Member

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    So.. there are not any of this as below?..
    GPU #1
    VRM #2
    Mem #3

    I gotta say.. the GPU Temp. #2 seems to be the highest temps...

    Cheers :p
  8. W1zzard

    W1zzard Administrator Staff Member

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    the locations are display io, memory io and shader core. all those locations are inside the gpu in different areas
  9. ShadowFold

    ShadowFold New Member

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    I thought 3 was the vrm's cause if I dont have a HS on them they get really hot.
  10. Wshlist New Member

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    In another thread a guy installed his VRM heatsink of his new coolersetup wrong and the GPU#2 temps went up to 117C or thereabouts then he did it right after people advised him and they went down to half that, so in short: these sensors are NOT all in the GPU, at least #2 is the VRM area.
    I think it was on a 4850 in the thread though but obviously it does show those sensors aren't all in the GPU, but since the 4870 has a different layout and VRM setup I'm not sure which temp is monitoring what parts of the card.

    Perhaps a can of compressed air blown on various part of the card while it's dong some work and while monitored by GPU-Z will help show what's monitored by which sensors.
    (I'd say cooling spray but sudden freezing of areas might not be healthy).
    Last edited by a moderator: Aug 6, 2008
  11. blaher New Member

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    I'd have to agree, as you can see by my results here:
    http://forums.techpowerup.com/showthread.php?t=65333

    I'd say both sensors #2 and #3 are at the back of the card, where the VRMs are.
  12. W1zzard

    W1zzard Administrator Staff Member

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    then the amd engineers have wrong information
  13. Widjaja

    Widjaja

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    So 1, 2 & 3 are not generally set to say 1=core, 2=VRM, 3=memory?

    So they are just sensors in random strategic areas of the GPU?
    And the location of these sensors are anyones guess?

    All I know is 1 & 3 are usually around the same temp while 2 is always higher.

    Well duh :D
  14. Wshlist New Member

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    I repost: they are NOT all on the GPU ide, since people that had no or bad cooling on their VRM's (at least on the 4850) found that #2 went very high and came down when the vrm was properly cooled for instance, that much is obvious.
    Please stop insisting spreading (false) information without having any real info to base it on.
    In other news for the girls: you can't get pregnant from toiletseats :)
  15. tomcug New Member

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    Yes, I had very high #2 temperature without heatsink on VRMs. So I think they aren't all on the GPU die too, because it isn't possible that different areas of the core can differ in temperature by over 40 °C.
  16. W1zzard

    W1zzard Administrator Staff Member

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    i just did a quick test ..
    powercolor 4850 with that round zalman cooler and metal plate on vrm
    temps in idle in gpuz are 44, 51, 43.5
    removed the little vrm heatsink while the system is running
    temps in idle in gpuz without vrm heatsink are 44, 51, 43.5

    so removing the vrm heatsink has no effect on these temps which means that neither of these 3 is vrm temp

    will test with load next
  17. W1zzard

    W1zzard Administrator Staff Member

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    load without vrm heatsink:
    [​IMG]

    load with vrm heatsink:
    [​IMG]

    load with vrm heatsink and jammed fan:
    [​IMG]

    Please stop insisting spreading (false) information without having any real info to base it on.
    Last edited: Aug 6, 2008
  18. iamollie New Member

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    W1zzard saves teh day!
  19. Wshlist New Member

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    Perhaps it's a case of the 4870 and 4850 being different, or perhaps w1zzard is simply lying because he's having issues with me.
    Yeah now go abuse your power and ban me and feel you made a big win, but don't forget to boast about it too.
  20. Urbklr

    Urbklr

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    I believe W1zz, but I don't at the same time. I had ran my VRM's passive, and then added a 40MM fan, adding the fan lowered my temp#2 a decent amount. I'm confused:confused:
  21. EastCoasthandle

    EastCoasthandle New Member

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    Thanks for the clarification W1z. Could you update GPU-Z with the same information as in your screenshots? Also, is there a vrm temp that you could add to GPU-Z? I ask because Everest has indicated a vrm temp (not sure if it's accurate or not).
  22. tigger

    tigger I'm the only one

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    @Wshlist

    If thats what you think of w1zzard and this forum,then why dont you try another forum.
  23. W1zzard

    W1zzard Administrator Staff Member

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    wshlist why should i lie ? but if my own testing strongly indicates a certain result i have to believe in what i see. if someone else wants to do the same experiment, be my guest. if someone has any suggestions on what i did wrong or what else could be tested, let's hear it

    new gpuz version will have vrm/voltage monitoring on 4870
    new gpuz version will have the labels as displayed in my screenshots above
    EastCoasthandle says thanks.
  24. W1zzard

    W1zzard Administrator Staff Member

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    so the fan blew fresh air all over the card?
  25. Urbklr

    Urbklr

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    No, that's the 120MM's job. That little fan doesn't have enough airflow to effect the Die's temperature at all.

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