Mounting a PSU upside down. Bad idea?
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Mounting a PSU upside down. Bad idea?
I'm continuing my unexperienced experiments.
I've been thinking a lot about quieting PCs lately. I'm almost obsessed with it. And i've come think about the airflow around the CPU with often rear fan and PSU close to it. So i came up with an idea that i need some response to.
What about mounting a PSU, with a 120mm bottom fan only, upside down and cutting a hole in the case for the fan. And of course some damping duct of some kind. Maybe a chimney. No seriously, would it be very bad for noice? The air should be cooler if i tried not to get it from the rear fan exhaust. I've seen aLian-Li case (PC6277) with such a solution. But it's optimised for watercooling so maybe noice wasn't such a big issue.
What do you think? Am i nuts?
I've been thinking a lot about quieting PCs lately. I'm almost obsessed with it. And i've come think about the airflow around the CPU with often rear fan and PSU close to it. So i came up with an idea that i need some response to.
What about mounting a PSU, with a 120mm bottom fan only, upside down and cutting a hole in the case for the fan. And of course some damping duct of some kind. Maybe a chimney. No seriously, would it be very bad for noice? The air should be cooler if i tried not to get it from the rear fan exhaust. I've seen aLian-Li case (PC6277) with such a solution. But it's optimised for watercooling so maybe noice wasn't such a big issue.
What do you think? Am i nuts?
You're not nuts; I've already done it. I got tired of the PSU fan ramping up all the time.
I have a Seasonic 120mm PSU flipped upside-down. I cut a hole in the top of my case for air to get through.
I haven't opened the PSU yet, but what I'd like to do is cut out the stamped grill and put a Papst fan in there. I'd also reverse the airflow so that the fan would blow up and away from the PSU instead of towards the PSU innards. Hot air rises, after all. Plus, the rest of my fans are already blowing air this way (intake from the back, exhaust from another 120mm hole at the top of the case).
I keep meaning to finish this project and take some pictures, but it's been months and I've kind of lost interest. My computer's already cool and quiet enough for my liking.
I have a Seasonic 120mm PSU flipped upside-down. I cut a hole in the top of my case for air to get through.
I haven't opened the PSU yet, but what I'd like to do is cut out the stamped grill and put a Papst fan in there. I'd also reverse the airflow so that the fan would blow up and away from the PSU instead of towards the PSU innards. Hot air rises, after all. Plus, the rest of my fans are already blowing air this way (intake from the back, exhaust from another 120mm hole at the top of the case).
I keep meaning to finish this project and take some pictures, but it's been months and I've kind of lost interest. My computer's already cool and quiet enough for my liking.
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Sorry, but this is plain wrong. In a normal mounted PSU the PCB is on the top. If you flip it over the PCB will be below the hot components. The second reason this doesn't cut wood is the big 120mm fan in the PSU. The airflow inside a PSU is dominated by this fan, convection no longer plays any role.DyJohnnY wrote:i'm more worried about the PCB heating up...the radiators beeing ineffective, cuz heat will come out from them only to rise back to the components that generated it...this sort of solution might work but with very well thought airflows
The main reason I wouldn't use a PSU with the hole to the top is the danger of somebody (accidentally) dropping a paperclip into the PSU.
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