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  1. #1
    Joined
    Nov 2013
    Posts
    1

    Help. Need new fans for my radiator.

    Hi,

    I have a Corsair H80i and I want to get rid of the stock fans on them for reasons that are not important (I just don't like them). I'm planning to replace them with two Noctua NF-F12 PWMs in a push/pull configuration; however, I've been doing some research and fail to see the benefit of having a high/static pressure fan in the pull part of the configuration. A static pressure fan is to prevent any air from bouncing back from the radiator and out through the spacing between the fan blades.

    Now that being said; would it not be better to have one Noctua NF-F12 PWM to push the air through the radiator and an airflow fan like the Noctua NF-S12A FLX to pull the air from the radiator? Also, would using a pressure fan to push air really needed? Could you just use and airflow fan to just pull air?

    I would appreciate anyone's insight; especially if you have lots of experience testing out these types of configuration. Thanks in advance

  2. #2
    Joined
    Apr 2002
    Location
    UK
    Posts
    90

    Re: Help. Need new fans for my radiator.

    Ideally you need high static pressure fans on pull and push.

    The pressure difference across the radiator is what draws the air through the restrictions of the radiator fins. The restriction prevents air flow, so high air flow fans are not effective.
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  3. #3
    Joined
    Feb 2014
    Posts
    15

    Re: Help. Need new fans for my radiator.

    In using two of those Noctua fans on my h100i and it's been running great. It's much more silent than what it used to be with corsairs stock fans.

  4. #4
    Joined
    Feb 2014
    Posts
    3

    Re: Help. Need new fans for my radiator.

    Quote Originally Posted by Wih'Glah View Post
    Ideally you need high static pressure fans on pull and push.

    The pressure difference across the radiator is what draws the air through the restrictions of the radiator fins. The restriction prevents air flow, so high air flow fans are not effective.
    This. High static pressure fans are the way to go and you'd want to look into getting fans with above 2.0 mm H20 static pressure or higher if you can find it, however these can be quite hard to find and fan manufacturer's tend to greatly exaggerate the static pressure actually output by the fans. Similar to high airflow fans, the more static pressure the louder the fans tend to be, although compromises can be made.

    A few suggestions based on personal experience are the following 4 fans:
    - Corsair SP 120 High Performance (For pure performance)
    - Corsair SP 120 Quiet Edition (Very quiet but very good static pressure for the RPM levels and noise. Not necessarily ideal for performance)
    - Gelid Wing 12 PWM (These are the fans in my current build, and have excellent static pressure. They get a bit loud when they are closer to 100% fan speed but they are dead quiet at lower RPMs and perform fantastic.)
    - Scythe Gentle Typhoons (At Overclock.net, these were a radiator fan standard for a long time. I used them for a few years before trying out the fans above and they were fantastic while I had them. They are sitting in an old rig right now)

    There is also a lot of talk about Yate Loon fans, but having never owned them I can't speak for them but I hear lots of people on the net are very satisfied with them. Maybe try a quick Google search?

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