• Eochaid@lemmy.world
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    1 year ago

    At a certain point, the sheer amount of fan housing mass is blocking air flow more than anything else.

    • noughtnaut@kbin.social
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      1 year ago

      They would likely perform worse. If (“if”, ha) those fans are not in perfect sync, they’re going to obstruct airflow. Also, consider that each fan introduces both audible noise and perturbations in the airflow which in turn, also will cause noise.

      Incidentally, I have (almost) that very same case, an Antec P182. Mine has a super-quiet PSU fan, and a ginormous heat pipe cpu cooler (HR-1 if you’re curious) with one fan … and that is plenty.

    • FiveMacs@lemmy.ca
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      1 year ago

      No

      The same amount of airflow is being pulled through, and your static pressure would go up meaning the fans actually need to work harder for the same effect.

      • mustardman@discuss.tchncs.de
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        1 year ago

        This is incorrect. Two fans in series doubles the amount of pressure generated by the fan, while leaving the max flow rate the same. Two fans in parallel doubles the flow rate but leaves the pressure unchanged. This is why some radiators have two fans as it increases the airflow when needing to overcome something with high static pressure.

        Fans in series should not be so close as it would cause turbulence, however, some gap will prevent this (or something that naturally fixes turbulent flow, like a radiator).

        • FiveMacs@lemmy.ca
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          1 year ago

          …you literally said the same thing as me.

          “Two fans in series doubles the amount of pressure generated by the fan, while leaving the max flow rate the same”

          Static pressure increases, airflow remains the same.

          • mustardman@discuss.tchncs.de
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            1 year ago

            If there is a static load, the air flow increases compared to a single fan. At no static loading they are the same.

    • TwanHE@lemmy.world
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      1 year ago

      I know it’s done in servers with high rpm 40mm fans. To create extra static pressure. But it didn’t work with 2x 120mm fan on a aio in my testing.

    • waitmarks@lemmy.world
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      1 year ago

      Probably would only be slightly better, but it would be significantly louder since multiple fans creates significant turbulence.

  • halo5@lemmy.world
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    1 year ago

    Forget about jet engines. This thing probably sounds more like a helicopter at close range! The ironic part of this is that it could actually lead to power supply issues, which can be just as bad…

    • eldain@feddit.nl
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      1 year ago

      Luckily you can get this fractal case with sound damping side panels! It probably sounds like a helicopter in a subway tunnel below you with the panels on.

    • Rednax@lemmy.world
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      1 year ago

      For shits amd giggles, I put a couple of industrial 10W fans in my PC once. That probably still made more noise than this. It also created so much overpressure that I could feel air escaping the tower from every little hole or crack. You could hold a piece of paper to the side of the pc, and see it moving because of the air escaping between the side panel and the main hull.

      But if these are normal fans (max maybe 1,5W), then the amount of power drawn will be the same as a couple of hardrives.