PSU... Fan up or down?

[JaxAgain]

Case is a Corsair 200R, PSU is an EVGA 600B. The PSU should be placed at the bottom of the case, and the case has ventilation holes at the bottom. So should I install it with the fan facing up or down?

 

[Jwpanz]

JayzTwoCents did a video on this and found that it doesn't really matter. The only factor that matters are where your PC is located. If you're on carpet then you'll want the fan up so it doesn't suffer trying to suck air through the carpet.

 

[JaxAgain]

Thanks. I'll be prudent and set the PSU with the fan facing down.

 

[nukemaster]

Many will generally say face down because it gets cooler air and will run cooler and more quiet. As said above if you are on a thick carpet would be less than ideal.

I have used them fan up in some cases because they are not as easy to clean without laying the case down and in some places the case is hard to lay down. Filters should be cleaned fairly often to keep dust out of the Power supply and it should still be cleaned from time to time with compressed air(air duster/datavac blower/ect).

 

[InvalidError]

I'm not a fan of bottom-mounted PSUs with bottom intake as it is easy to forget to clean that filter and honestly, I'd much prefer having only the easily visible front filters to worry about. But I'm not a fan of making bottom-mounted PSUs face up as that means that if you accidentally drop something and it falls inside the PSU, you may get a nasty surprise. As such, I would prefer a case like Antec's original 300 which mounted the PSU ~1/2" off the bottom with no bottom intake.

 

[Dark Lord of Tech]

I prefer fan down for optimal cooling.

 

[InvalidError]

All the dust in my room seems to find its way under my PC's case even though my PC is on a platform under my desk. I hate having to turn my case sideways to access the PSU air filter and having to lift it the case to remove the dust bunnies that assemble there. The slight breeze from the PSU drawing air in makes dust accumulate under my PC drastically faster than it does anywhere else. Looks more like an optimal dust trap than optimal cooling to me. I've had my motherboard go anti-surge on me due to the PSU overheating a few years ago because of that.

 

[JaxAgain]

Cleaned the filter for the first time since building my PC (1.75 years later). Not too much of a dust collection, cooling hasn't been an issue. Note that I have it on a desk.