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Zalman Zmachine GV1000 +HD3850/3870/4850

Discussion in 'AMD / ATI' started by kiriakost, Feb 8, 2009.

  1. kiriakost

    kiriakost New Member

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    Zalman Zmachine GV1000 +HD3850/3870

    Looks that i got lucky , and got today on eBAY (before few minutes) ,
    one second hand GV1000 . ;)

    Even if my system has zero issues about heat , i truly like to see how better this cooler can do the job .

    Yes, reviews tell the truth , and about 7-10C drop on core , are expected to happen . :D

    But what i care most , is not the drop , its the fan its self .

    Did any one try to use the cards power plug ?

    Zalman uses their own rpm - voltage controller ,
    but i am thinking to cut wires , and connect the fan on the VGA, as the original fan was connected.

    I am looking to find the DC motor similarity s , so to be 100% confident , that this change will not cause damage .

    Does any one know the DC motor specs of the HD3850 ?

    Any tips are welcome .


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    Last edited: Feb 14, 2009
  2. Jonny_doe New Member

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    I'd be interested in this too as i also have 1 running on my 4870
     
  3. kiriakost

    kiriakost New Member

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    All that i know so far are that the Zalman motor does 3600 rpm at 12V .

    http://www.pcab.co.uk/ebay/GV1000.pdf

    And the back plate, of the stock cooler has no info about the motor it self.



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  4. kiriakost

    kiriakost New Member

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    Nice , get a seat ... :D i got the card from UK seller , in six days or so , i will pas from theory to action .

    The safest bet will be to test both coolers and compare their needs for amperes ,
    milliamperes in our scenario .

    I believe that the third wire on Zalman , haves to do with the LEDs , i do not mind even to let it out of use .

    But until this happen , i would like to had at hand , any known theory ( specs ) of the original stock cooler.
     
  5. theorw

    theorw New Member

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    Doesn't the 3850 use the same cooler with 4850??
    Cos in that case i have a 4850 that i d love to disasemble in order to see the motor amps..
    So??Am i right about the similarity or not?
     
  6. theorw

    theorw New Member

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    Sorry!Now i see your vga i see its AGP,non reference design with 8pin power connector...
    And your cooler looks extremly similar to the VAPORX cooler of my previous SAPPHIRE 3870 TOXIC...
    What VGA is this???
     
  7. kiriakost

    kiriakost New Member

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    Its a Sapphire 3850 , latest model . ( Bios + Hynix 1000Mhz memory ) Two pins connector .

    I found the picture of one 4870 , yes just noticed the deference on the plug type .

    [​IMG]

    No way to read the electrical specs from the picture , but at list its on the cooler.:p
     
  8. kiriakost

    kiriakost New Member

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    I need to apologize to all , by looking the power plug deferences , from 3850 and the other cards , this thread had end up , with misleading title , about the electrical compatibility at list.


    Yes the GV1000 works ok in all that cards , but i can not help with the four pins plugs,
    as i have no knowledge what this pins do ..

    The two pins plug , its easy to play with .
    The third pin could be rpm reader , the fourth .. i have no idea.

    Never the less , a DC motor needs two wires , and thats all .

    About the on board fan plug, the voltage output its not important,
    as long the GPU needs cooling , it will send more and more voltage , until the fan moves as fast, as it needs to cool down ... ( My theory ) :)

    If i have right , the core will stay at the same temperatures , as with the stock cooler, with minimum fan usage.
     
  9. theorw

    theorw New Member

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  10. kiriakost

    kiriakost New Member

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    Thanks for the info .. about four pins plug .

    As about the motor , i check "Zerotherm" .
    MSI HD3850 PCS uses it .. found specs :D


    So now i know what to expect at list , as all the 80mm fans at the same rpm, use almost the same energy.

    Now i will speculate , that HD4870 should had better fan power output, than 3850 ,
    so even the "what ever" Risk ... should be allot less . :)



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  11. kiriakost

    kiriakost New Member

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  12. kiriakost

    kiriakost New Member

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    Got my reply from Zalman ... nothing special ..

    Reply

    They send me some pictures with specs , all broken due incompatible fonts .
    I ask them to resend , to see if its any worthy info on them.
     
  13. nafets New Member

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    You probably already know this, but you can simply splice the wires (red+black) from the HD3850's 2-pin plug to the wires (red+black) of the GV1000's fan. The white wire from the GV1000 is for RPM monitoring, and isn't necessary.

    This will allow your video card to automatically control the GV1000's fan speed based on your HD3850's BIOS settings...
     
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  14. kiriakost

    kiriakost New Member

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    All true ... but catalyst control center , does not show me any options ..

    2) I do not wish to run other software just for that .
    RivaTuner does the job .... ATI tools drops down FPS when active.

    I was hoping to find some one who has done my theory ... praxis.

    3) I am not thinking at all to mess up with the VGA bios.

    4) The only risky part , are to avoid damaging the VGA power plug.

    My cooler got shipped yesterday , in five days or so i will have it ,
    and i will play with it, out of the box. ;)

    So far i am calm and very happy , knowing that its truly powerful , than the old VF900.
    http://www.silentpcreview.com/article769-page5.html
     
  15. kiriakost

    kiriakost New Member

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    I found finally info about the Sapphire motor ... Its a 12v 0.23A :cool:

    I ordered today one "Fan mate 2" for 4 EUR (locally)
    I do not like to spent time making my own with one LM7805 and a trimer .

    The GV 1000 needs four more days to come, and the Fan mate will be here at the same time.
     

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  16. kiriakost

    kiriakost New Member

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    Just got my cooler , its just 5 minutes in my hands ...
    amazing but smaller than pictures . :toast:

    I just tested the motor , works amazing well , it starts to spin from 2 volts ,
    at 3 volts has enough power to create a strong air wave , at 5 volts its very powerful and silent , above 6,5 volts , the motor starts to become audible .
    At 12 v sounds like turbine . :laugh:
    (tested out of the computer case, no card on it)

    Motor specs :
    ZF8015BTX
    12V 0.45A

    More .. later on .
     
  17. kiriakost

    kiriakost New Member

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    Ok i got it on :toast:

    I never expected to work that well in comparison to stock .

    Before :
    Idle = 38-40
    Load = 72 -75 C

    After :
    Idle = 28 - 30
    Load = 43 - 44 :roll:

    Room temp 18C

    I powered it up with 7.5V ( hand made circuitry 7,5 + 12v ) , did not tried the 12V yet .
    I have one "fan mate II" on order , tomorrow will be here. (finalize testing)


    The temp on load is fantastic ... the truth are that the new cooler , does not have to share the cooling of the heatsink at both GPU and memory .
    Ramsinks do their task .

    So there a gain just from that , but here i got 31C drop , i never believe that would be so much .. :D

    The VRMs get cooled very well too , almost frozen.

    Some pics for now ..

    EDIT : 12V tests ... Load = 41 - 42 C :p

    Fresh AS3 .. in another 24 hours it will drop more.
     

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    Last edited: Feb 16, 2009
  18. kiriakost

    kiriakost New Member

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    Ok got "fan mate 2 " did my tests , looks that five volts is all that this cooler needs .

    The fan its not audible at 5V , so i will remove "fan mate 2 " , i will give direct 5 volts from the PSU , and i will use "fan mate 2 " for other task.

    I was hoping to find the sweet spot somewhere between 5-11 Volts , and it was at 5V ;)

    Any way , its an amazing cooler , i sign it . :D


    Here is an old link , telling that Sapphire did think to push on the market the HD3850 + Zalman compo .
    http://www.expreview.com/news/hard/2008-01-16/1200477426d7584.html



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    Last edited: Feb 20, 2009
  19. t77snapshot

    t77snapshot

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    Does this cooler have any leds? I'm shopping for a VGA Cooler but I don't want any fancy lights in it.
     
    Crunching for Team TPU
  20. King Wookie

    King Wookie New Member

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  21. kiriakost

    kiriakost New Member

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    Well its not like Christmas tree :laugh:, the fan has red LED .

    I have my case at the ground level , and the LED was not visible at all , so i put a mirror glass at the bottom of my case , and now i can finally see it ;)
     
  22. Thrackan

    Thrackan

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    That Z-Machine is basically the VF1000-LED with a bit different color and some aluminum instead of copper I believe. Nice cooler.

    Btw, you said you actually recieved a reply from Zalman? I asked them two weeks ago if the VF1000 would fit a reference 4870, still no answer :(
     
  23. kiriakost

    kiriakost New Member

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    Do not believe ..... check the specs , the GV 1000 its a nickel plated VF1000,
    with faster fan.
     
  24. Thrackan

    Thrackan

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    Ah, nickel plated, I missed that :D If I remember some reviews correctly, it does about as well as the VF1000, and I'm certainly happy with that. You should be seeing fine temps and relatively low noise on low fanspeed.
    High speed gives me quite the "whoosh" though.
     
  25. kiriakost

    kiriakost New Member

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    True :laugh:

    But here is the good part , the GV1000 fan does it well at just five volts ,
    the VF1000 ( because of the slower motor ) needs just a bit more voltage,
    so to get equal rpm with GV1000 . (rpm to before "whoosh" ratio :D )

    In simple words ... with the GV1000 you can use it at 5V, with out Fan-mate at all . ;)
     

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