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which direction should i have my fan blowing

Discussion in 'System Builder's Advice' started by skellattarr, Apr 17, 2013.

  1. skellattarr

    skellattarr

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    i have a rosewill blackhawk ultra case and there is a place where you can mount a fan behind the cpu socket. i was wondering which direction i should have the fan blowing if i have it blowing in the back of the motherboard would collect a lot of dust. if i have the fan blowing out would it even make a difference in the heat of the socket?
     
  2. drdeathx

    drdeathx

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    read up on positive and negative air flow.

    Use filters
     
  3. Lazermonkey

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    Hmmm I have three 120 exhaust and two 120 intake with a push/pull consisting of two 120's on the CPU cooler.

    Also, my side has room for two 120's which are empty.

    Does that sound like a decent air flow setup?

    My CPU idles around 32-36 and maxes @ 55 running prime95 depending on ambient temp in my home.
     
  4. skellattarr

    skellattarr

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  5. drdeathx

    drdeathx

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    Those temps are fine but high for stock if your not overclocked. If not overclocked, check tim.
     
  6. ne6togadno

    ne6togadno

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    here is picture of CM HAF X. on it CM give example for airflow in case.
    pictrue is from CM site.
     

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  7. ne6togadno

    ne6togadno

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    could be also high environment temp
     
  8. drdeathx

    drdeathx

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    Negative at stock speeds. Ambient would have to be very high. very
     
  9. ne6togadno

    ne6togadno

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    well i have seen this. i see it every summer in past 10-12 years. if i dont use ac in my home temps can rise to 30-35 and i bet in CA temps can rise even more since it is souther then city i live

    anyway back to the lazermonkey problem. he should start with cleaning dust from case/radiator fans. if doesnt help then should replace termal compound. if still doesnt help then CM 212.
     
    Last edited: Apr 17, 2013
  10. skellattarr

    skellattarr

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    that just shows air flow in front not behind motherboard tray
     
  11. RCoon

    RCoon Gaming Moderator Staff Member

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    Nobody puts fans there, nor do case manufacturers put mounting points there.
    It is possible to mount 80mm server fans to the rear of the cpu socket with ghetto mods.
     
  12. ne6togadno

    ne6togadno

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    sry i have missed that you ask for the mb back.
    i think it will be better if fan blows air out of the case
     
  13. skellattarr

    skellattarr

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    [​IMG]
     
  14. RCoon

    RCoon Gaming Moderator Staff Member

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  15. erocker

    erocker Super Moderator Staff Member

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    It takes a slim 120mm fan. Scythe makes one but I can't find it for sale anywhere. The fan can't be any thicker than 18mm.
     
  16. skellattarr

    skellattarr

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    ya i tried looking for a slim fan to and not able to find one but it seems to be wide enough for a normal 120mm fan but if i try it with my luck it would not fit lol
     
  17. ne6togadno

    ne6togadno

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    use toothpick and measure distance between cover and backplate then you will know how tick fan you can fit
    other option is to place fan outside of the cover
     
  18. Law-II

    Law-II

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  19. skellattarr

    skellattarr

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    i learned from os2wiz that having a fan in that spot doesn't make that much of a difference so im not going to bother putting one there.
     
  20. Lazermonkey

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    It's a new system. (no dust)

    Specs are in my profile.

    CPU is OC'd from 3.5 to 4.2 @ 1.3 volts.

    Cooler is a CM Hyper 212 with push/pull.

    I used the paste whci came with the Hyper 212. I ordered some Arctic silver 5 and just waiting for it to get here.

    Also, what is the best way to apply the AS-5? I have seen a bunch of different opinions on this.
     
  21. RCoon

    RCoon Gaming Moderator Staff Member

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    Multiple:
    1 spread a line down the middle where the die sits behind the IHS
    2 small circle(donut) shape
    3 put it on however you like, and spread with plastic gloves or tiny spatula
     
  22. skellattarr

    skellattarr

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    i just put a small pea size amount in the middle and let the heatsink spread it
     
  23. Mindweaver

    Mindweaver Moderato®™ Staff Member

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    You can also achieve that by putting the left side on the right side or buying a left side for your right side. ;) I've seen people do this before even with windows.. why? I don't know for the window, but for a fan to blow onto the bottom of the socket with exhaust at the top could help. But I could only see this in extreme cases. Personally I wouldn't.. If I was worried about it, I'd spend more money on a better cooler.
     
    Crunching for Team TPU
  24. MxPhenom 216

    MxPhenom 216 Corsair Fanboy

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    That's What You're Suppose To Do :)
     
  25. rtwjunkie

    rtwjunkie

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    CM 690 case did in fact do that. there is space and mounting points for a thin 80mm fan, I believe 15mm thick, directly behind the CPU mount on the motherboard. I've got the case in storage and two of those fans at home. :cool:
     

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