Flipping the power supply

[SteveGrabowski]

When browsing newegg's shell shockers this morning, I saw one of them is the Antec 300, which has a bottom mount for the power supply but no bottom fan grille so the PSU needs to be flipped over. I'm wondering if this starves the graphics card of air the same way mounting a side fan as an exhaust instead of as an intake seems to do. Does that also starve your CPU for cool air?

 

[BonzaiDuck]

When browsing newegg's shell shockers this morning, I saw one of them is the Antec 300, which has a bottom mount for the power supply but no bottom fan grille so the PSU needs to be flipped over. I'm wondering if this starves the graphics card of air the same way mounting a side fan as an exhaust instead of as an intake seems to do. Does that also starve your CPU for cool air?

Don't know about the Antec 300; my HAF 922's have a bottom vent, and I could flip the PSU either way. I realized only recently that I'd blocked off some of the vent with my caster-wheel solution -- with an aluminum 2" wide and length of the case's width. There's still sufficient venting to allow the PSU internal fan to do its work.

It had been my established practice though to mount the PSU with the fan face-up. With a pressurized case, the PSU stays so cool that I never saw the Seasonic fan spin up. And -- no -- I can't see what this has to do with the graphics card. Assuming you have sufficient case intake to begin with, I just can't see a connection there.

 

[AntonioHG]

When browsing newegg's shell shockers this morning, I saw one of them is the Antec 300, which has a bottom mount for the power supply but no bottom fan grille so the PSU needs to be flipped over. I'm wondering if this starves the graphics card of air the same way mounting a side fan as an exhaust instead of as an intake seems to do. Does that also starve your CPU for cool air?

No noticeable change in temperatures from what I've experienced. If you are really worried about it, get a magnetic fan filter and stick it on the bottom of the case, but really, you're worried about nothing.

 

[SteveGrabowski]

Thanks guys. I saw a test where GPU temps shot up hugely when using a side fan as an exhaust, but I guess that's a lot closer to the graphics card than is the power supply.