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Thread: gradual rpm increase




  1. #1
    Join Date
    Dec 2002
    Location
    Winnipeg, Canada
    Posts
    848

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    I have this tt dargonorb 3 #1135, and when i got it the rpm's were around 7200. They have gradually increased in speed, and now its just under 7800. The sound seems a bit louder now too.
    This is normal right?
    (it is loud enough to begin with, but sound is not an issue)
    I noted the +-10% on the speed before buying it and the increase sounds about right.
    I would think that this increase may make it cool a bit better y/n?

    Im very impressed with its cooling. Ive just never seen a fan increase that much, but i guess its relatave.
    athlon xp-m@2456mhz(12x204)
    tt aquariusII liquid cooled/ arctic silver ceramique
    asus a7n8xe-dlx
    thermaltake xaserIII lanfire
    bfg 6800gt
    seagate sataII 250gb/seagate 7200rpm 160gb ide
    samsung dvdrw
    2x1024 kingston hyper-x pc3200/ windows xp pro sp3
    logitech mx518/ logitech wingman rumble
    2x samsung 955df 19"/ canon i960
    creative x-fi fatal1ty 64mb/ altec lansing 251-5.1
    mushkin 550w

    opteron 146 @ 2850 (10x285)
    DFI infinity nf4 ultra
    thermaltake tsunami dream -black
    seagate sataII 500gb
    evga 8600gt oc ssc edition
    samsung sata dvd-rw
    2x1024 ocz black
    logitech ifeel/ nec accusync 75f
    ocz fatal1ty 550w

  2. #2
    Join Date
    Aug 2002
    Location
    Ohio, USA
    Posts
    1,296

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    There are only two things that I can think of that might lead to an increase in rpm. One is additional voltage applied to the fan, meaning it was under voltage before or over voltage now. The other is that the bearings/races have worn enough to produce less friction. I would think none of the above would be desireable. What kind of time frame does this change represent? I also think that the manufacturer's mention of 10% would refer to the initial speed, not that it would vary within that parameter.

  3. #3
    Join Date
    Sep 2002
    Posts
    1,636

    Default

    maybe the PSU is going :confused:
    that would cause the voltage to change.

  4. #4
    Join Date
    Dec 2002
    Location
    Winnipeg, Canada
    Posts
    848

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    I got it 28 days ago.
    Well, I did an experement. I partially restricted the fan with my hand for 30 seconds. Mobo monitor noted an instant 1800 rpm increase in fan speed. A false reading anyway. So i got to thinking that a month worth of dust and cat hair could have made the percieved increase I was noticing. So took the cap off and cleaned it completely (there was barely any dirt in it) and the speed is back to 7100 rpm again and the temp dropped by 3c to where it was after the breakin of the asc.
    I dont think it actually increased. It just thought it did from the obstruction creating more current draw.
    This thing sounds like a vacuum cleaner and when u put your hand over it , the same resulting noise.

    What a touchy device compared to other hs/f.
    athlon xp-m@2456mhz(12x204)
    tt aquariusII liquid cooled/ arctic silver ceramique
    asus a7n8xe-dlx
    thermaltake xaserIII lanfire
    bfg 6800gt
    seagate sataII 250gb/seagate 7200rpm 160gb ide
    samsung dvdrw
    2x1024 kingston hyper-x pc3200/ windows xp pro sp3
    logitech mx518/ logitech wingman rumble
    2x samsung 955df 19"/ canon i960
    creative x-fi fatal1ty 64mb/ altec lansing 251-5.1
    mushkin 550w

    opteron 146 @ 2850 (10x285)
    DFI infinity nf4 ultra
    thermaltake tsunami dream -black
    seagate sataII 500gb
    evga 8600gt oc ssc edition
    samsung sata dvd-rw
    2x1024 ocz black
    logitech ifeel/ nec accusync 75f
    ocz fatal1ty 550w

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