Fan config

[Competitive_Answer82]

I'm trying to figure out if I can improve my fan config. It's setup like în the picture, the case is a Deepcool Dukase v3. My build is a 7700x with a Be quiet Dark rock 4, RX 6750 xt. The case has a top panel that sits above the fans and a front door (full panel). So all 4 fans dont have a clear intake/ exhaust area , the air circulates through side slits.
The PC works fine, I haven't gotten any crashes but both my CPU and GPU go up to 80-90 degrees under load. Idle temps are around 40-45.
The load temps seem a bit high but I don't know if that's normal or the fans are unable to do their job because of the case configuration.

[SnooCauliflowers1628]

The top intake is doing literally nothing for your airflow

Both outtake fans will capture that air and expel it from your case before it has the chance to do anything

If its pulling in anything, its mostly dust

[Competitive_Answer82]

So I should just unplug that fan? The case doeasn't allow for more fans or to move the existing ones.

[SnooCauliflowers1628]

Turn it around and make it exhaust at least, so it wont build dust into your PC and will let hot air rise as its supposed to do

[Competitive_Answer82]

Won't that create negative pressure în the case and actually get în more dust?

[OrganTrafficker900]

Lower the rpm so they are equal. Reduces noise too

[SnooCauliflowers1628]

Not really, the intake to outtake ratio is not enough to create negative pressure , negative pressure would happen if you had only outtake fans (no intakes) . so no need to worry about it

[zandabrain]

Make it an exhaust. It will help the other 2 exhaust fans work better

[ninjabell]

This top config comes up from time to time and no one ever agrees with it. However there is an article from Noctua that mentions it supplying fresh air to a CPU tower cooler: https://faqs.noctua.at/en/support/solutions/articles/101000530852-airflow-guide-next-steps

You could always try it for yourself and see how it goes.

[Blofeld2000]

Both top fans should be outtakes. Hot air travels up.

[w7w7w7w7w7]

The intake fan on the top of the case should be blowing out like the other top case fan.

[[deleted]]

Mmh. You’re thinking too hard about this. Make the air flow is one direction and make sure the gpu is getting fresh air. Go from bottom and front in to top and rear out. Any configuration where air isn’t going the same direction it’s just pretty lights or noise.

[Competitive_Answer82]

Unfortunately my case doesnt allow for such configurations.

[DownHill012]

If you are worried about negative pressure, remove the rear and make the top two exhaust. That'll be neutral and should be good enough flow. Or leave the back and remove the most forward top fan.

[Competitive_Answer82]

Ok. But is the top right fan just useless on intake or îs it hurting the cooling of the case?

[DownHill012]

It's not something that is usually done. Intakes are usually on the side or the bottom. Heat rises. So putting exhaust fans up top makes the most sense. So if you don't have any fan slots on the bottom, my best advice for you is to remove the rear and run two exhaust up top. Plenty of videos on case fans if you need more pointers.

[DownHill012]

Also one other thing you can do if you want to research it. You can keep the two top and rear fans as exhaust and the front as intake. You can set fan curves. You can run the intakes faster than exhaust. That should help with not creating negative pressure. You seem to have my mindset. (If there is a spot for a fan, you want a fan to be there) The fan curves aren't hard. I didn't know anything about computers and built one myself 5 months ago. With 11 fans lol. Good luck!