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    Looking for a used ATI 5870M

    Discussion in 'ASUS Gaming Notebook Forum' started by ll_r1d0_ll, Jul 7, 2015.

  1. ll_r1d0_ll

    ll_r1d0_ll Notebook Evangelist

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    ahaa ! i can do modification with the wires actually ! please guide me a little more deeply ?
     
    ll_r1d0_ll, Sep 2, 2015
    #51
  2. t456

    t456 1977-09-05, 12:56:00 UTC

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    :cool:

    Make some photos, that will help; fans, fan cables and their motherboard connectors. Sadly, you cannot always rely on the cable's colour to determine its function, but the tiny fan pcb is usually labelled and with any luck so is the mb. If you have a multimeter or can borrow one; that might be handy. Not strictly necessary, though. You do need a small wire; to get from fan A to fan B, since they're too far apart.
     
    t456, Sep 3, 2015
    #52
  3. Meaker@Sager

    Meaker@Sager Company Representative

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    Just don't run a single device stress test if you do that as it wont spin up the fan.
     
    Meaker@Sager, Sep 5, 2015
    #53
  4. ll_r1d0_ll

    ll_r1d0_ll Notebook Evangelist

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    hey thanks for the idea .. will try that for sure btw both the fans have 4 wires each same like in the picture ! dont want to disassemble my laptop atm :p will do that soon but not now ! btw whats the status of ur 5870m ? is it alive ? VBIOS ?Any progress?
     
    ll_r1d0_ll, Sep 18, 2015
    #54
  5. ll_r1d0_ll

    ll_r1d0_ll Notebook Evangelist

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    sorry but i didnt get you ! what do u mean by SINGLE DEVICE stress test?
     
    ll_r1d0_ll, Sep 18, 2015
    #55
  6. Meaker@Sager

    Meaker@Sager Company Representative

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    Taking the PWM control from the CPU fan and then running a purely GPU load could make the card over heat as the CPU temps stay low.
     
    Meaker@Sager, Sep 19, 2015
    #56
  7. t456

    t456 1977-09-05, 12:56:00 UTC

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    Will do that soon, but now now :vbbiggrin: . Got distracted by a different mod (again):

    [​IMG]
     
    t456, Sep 19, 2015
    #57
  8. ll_r1d0_ll

    ll_r1d0_ll Notebook Evangelist

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    lol what is this mod for ?for which laptop?
     
    ll_r1d0_ll, Sep 19, 2015
    #58
  9. t456

    t456 1977-09-05, 12:56:00 UTC

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    It's a tap directly into the battery; 3x3.7V = 11.1V source. Since the cells can deliver 2.8A (per row) with ease, that's 31W of power. Only need ~10W of that, though, so a simple resistor will do.
     
    t456, Sep 19, 2015
    #59
  10. ll_r1d0_ll

    ll_r1d0_ll Notebook Evangelist

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    ahaaaa cool Mr.einstein :p please update me with the speed control of ur 5870m with any vbios or custom vbios of urs :) um desperately waiting for ur update :)
     
    ll_r1d0_ll, Sep 19, 2015
    #60
  11. ll_r1d0_ll

    ll_r1d0_ll Notebook Evangelist

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    hmmm interesting ! well i will try it for once :p just a try :D
     
    ll_r1d0_ll, Sep 20, 2015
    #61
  12. ll_r1d0_ll

    ll_r1d0_ll Notebook Evangelist

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    hmmm interesting ! well i will try it for once :p just a try :D
     
    ll_r1d0_ll, Sep 20, 2015
    #62
  13. Meaker@Sager

    Meaker@Sager Company Representative

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    Just keep a close eye on things ;)
     
    Meaker@Sager, Sep 23, 2015
    #63
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  14. C4RN1

    C4RN1 Notebook Consultant

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    C4RN1, Sep 25, 2015
    #64
    t456 likes this.
  15. t456

    t456 1977-09-05, 12:56:00 UTC

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    Ooh, nice :vbsmile: ! Tad expensive, though. Kinda tempted to buy one and check what's inside ... probably a few cheap relays.

    However, with a 4-wire fan it is not guaranteed to work; this normally needs a fixed voltage and this controller will deliver variable voltage. Hence it's only listed to support 2-wire/3-wire fans. Could try it if the pwm-splice option isn't satisfactory. That won't give problems either, though, worst case is that gpu fan is running while only the cpu needs cooling.
     
    t456, Sep 25, 2015
    #65
  16. C4RN1

    C4RN1 Notebook Consultant

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    C4RN1, Sep 25, 2015
    #66
  17. t456

    t456 1977-09-05, 12:56:00 UTC

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    Better :vbthumbsup: .

    Too expensive for what it does, but it is a good solution, definitely. Also for rpm-limited fans (pwm type on some AWs). Only disadvantage is no fan table; 4-speed might become a bit annoying after a while. Proper sensor-heatsink interface is tricky, as well ... that'd need thermal adhesive or tape. Think this'll do nicely for mSATA/M.2/PCH fans (option bookmarked).

    Thanks for the heads-up!
     
    t456, Sep 25, 2015
    #67
  18. Meaker@Sager

    Meaker@Sager Company Representative

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    It's a shame they don't leave some way of programming in your own fan table.
     
    Meaker@Sager, Sep 27, 2015
    #68
  19. Meaker@Sager

    Meaker@Sager Company Representative

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    Maybe designing a little custom power circuit would be a good idea so as not to waste quite so much power and as I said in the other thread be careful when soldering connections to a large power source.

    EDIT: Damn forum pretended there were no later posts.
     
    Meaker@Sager, Oct 9, 2015
    #69
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