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  1. #1
    Member bk T's Avatar
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    Default CM Hyper 212 Plus

    Wish to add a second fan to this CPU cooler. How shall I configure the second fan, make both fans drawing air out or make it blow in the same direction as the primary fan?

    Your views, please.

    Cheers

  2. #2
    In a 1920s time warp Terry Porritt's Avatar
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    Default Re: CM Hyper 212 Plus

    What do you think the air flow through the fins would be if the fans blew against one another ?

    http://www.takealot.com/electronics/...m-base,4949351

  3. #3
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    Default Re: CM Hyper 212 Plus

    both fans in the same direction
    one pushing air into the grills of the cpu cooler and the other pulling the air out of the grills and out of the case
    http://blog.corsair.com/wp-content/u...pull-image.png
    you would get a lot more air flow if you set the fans up to help each other rather than oppose each other (see pic)
    force that air through it!

  4. #4
    Yup. That IS a typo. 8ftmetalhaed's Avatar
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    Default Re: CM Hyper 212 Plus

    have them both going in the same direction. Unless there's some directional air vents or some other way for air to circulate, you'll potentially have two fans pulling on the same air. With two in one direction you'll have more air pushed in one direction with better flow, in theory.
    pc: i5 750 8GB ddr3 xfx 5770 Gbyte UD4P55 1TB WD Green, OCZ Vertex 4 64g SSD CoolMast Glad 600 case w/500 W PSU
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  5. #5
    Network Engineer SolMiester's Avatar
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    Default Re: CM Hyper 212 Plus

    Quote Originally Posted by bk T View Post
    Wish to add a second fan to this CPU cooler. How shall I configure the second fan, make both fans drawing air out or make it blow in the same direction as the primary fan?

    Your views, please.

    Cheers
    Do you really need another fan for push\pull....Are your temps high?
    HOME-LianLi PC-9F,ASRock P67Pro3, i5 2500k @4Ghz, 8Gb HyperX, ASUS GTX660 OC, Corsair Force 120 SSD, HP zIPS22", HOME SERVER HP ML110G6 HOST-Plex\Ubuntu\8

  6. #6
    In a 1920s time warp Terry Porritt's Avatar
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    Default Re: CM Hyper 212 Plus

    The over-riding principle is that the heat transfer ie cooling, is by forced convection, so you want maximum air speed through/over the fins. This is achieved with both fans working, as already said, in the same direction, pushing/blowing air straight through the fins.

    You certainly don't want to have the air turned through a right angle as would happen if each fan sucked or if each fan blew air out of the sides of the heat exchanger, the air velocity would be much lower.

  7. #7
    amateur expert dugimodo's Avatar
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    Default Re: CM Hyper 212 Plus

    I was tempted to add one myself, my concern was the first fan is being speed controlled by the BIOS so how would I match the airflow on both sides. I suppose the best option is a pair of matched fans running at the same speed but I like how quiet mine is. I overclock my 3570K to 4.1 Ghz and the single fan is inaudible most of the time while keeping the CPU under 60 (creeps into the high 60's under 100% load and the fan speeds up a bit). I could add a fan controller but I don't like all the extra wiring.

    One minor hassle with mine is when the BIOS is set to either balanced or quiet mode for QFan the speed at boot up is only 500RPM which is below the default warning level and sets off an alarm. Easily fixed though.
    Ryzen 2700X, 16Gb DDR4RAM, 512GB M.2 NVME SSD, MSI GTX1070

  8. #8
    Member bk T's Avatar
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    Default Re: CM Hyper 212 Plus

    Quote Originally Posted by SolMiester View Post
    Do you really need another fan for push\pull....Are your temps high?
    Don't really need it. 'Normal' running at <50 deg but when playing Guildwars2 it shoots up to 65~73 deg (using hardware monitor).

    Another option would be adding another case fan to transfer the heat out of the case.

  9. #9
    Senior Member pctek's Avatar
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    Default Re: CM Hyper 212 Plus

    Quote Originally Posted by bk T View Post

    Another option would be adding another case fan to transfer the heat out of the case.
    That would be what I'd do. As for the BIOS control - disable it.
    wipe your paws.

  10. #10
    Senior Member Slankydudl's Avatar
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    Default Re: CM Hyper 212 Plus

    You will want them to both go in the same direction unless you want less airflow and alot of noise. And as for adding another case fan, dont most cases come with all their fans atleast? I know they are usually preety crap but i dont see why you wouldnt have all your fan spaces filled. As for the bios thing id recommend a good drive bay fan controller.
    Last edited by Slankydudl; 18-12-2012 at 11:00 AM.

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