Question Optimal Airflow or Mistake? Need Expert Advice on My PC Cooling Setup

Feb 22, 2025
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This is how my PC case is set up. The fans on the right side intake fresh air, and the bottom fans also intake fresh air. The top fans and the single rear fan are set as exhaust.


A friend suggested that the top fans should be intake instead of exhaust, saying that this would be a better airflow configuration. However, I’m not sure how the rest of the fans should be arranged in that case.

Picture: View: https://imgur.com/a/Lk6mJJJ


Can you tell me if my current setup is correct or if there is a better way to optimize airflow?
 
Personally, I'd have left the area for fans adjacent the motherboard tray, alone. As it stands, the top most intake fan's ambient air intake is being sucked out by the front most top mounted exhaust fan.

Wat sort of temps are you getting for your AIO/CPU and GPU?

A friend suggested that the top fans should be intake instead of exhaust, saying that this would be a better airflow configuration.
Might want to not listen to him. I mean you could but then you'd need to remove the rear exhaust fan so it's a +ve pressure for your case.
 
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Your current setup is correct. As some may note the right side top fan and the case top right fan sort of negate each other since they're so close together. But that's OK since you want the lights.
Would my case's internal airflow be negatively affected in this setup?


In games, my CPU temperature averages around 90-95°C, depending on the game, and it sometimes spikes to a maximum of 100°C, as seen on HWMonitor.


As for my GPU, the maximum temperature reaches 75°C in the most demanding games, while the average stays between 65-70°C.


If my current setup is correct, I will leave it as it is.
 
Personally, I'd have left the area for fans adjacent the motherboard tray, alone. As it stands, the top most intake fan's ambient air intake is being sucked out by the front most top mounted exhaust fan.

Wat sort of temps are you getting for your AIO/CPU and GPU?

A friend suggested that the top fans should be intake instead of exhaust, saying that this would be a better airflow configuration.
Might want to not listen to him. I mean you could but then you'd need to remove the rear exhaust fan so it's a +ve pressure for your case.


So, I'm not exactly sure what you mean, but the three-fan group on the right side is pulling in fresh air.


CPU temperatures average around 90-95°C in games, sometimes dropping to 85°C depending on the game. I've also seen it hit a max of 100°C on HWMonitor.


As for the GPU, the highest temperature I've seen on HWMonitor is 75°C, while the average temperature is around 70°C.
 
So, I'm not exactly sure what you mean, but the three-fan group on the right side is pulling in fresh air.


CPU temperatures average around 90-95°C in games, sometimes dropping to 85°C depending on the game. I've also seen it hit a max of 100°C on HWMonitor.


As for the GPU, the highest temperature I've seen on HWMonitor is 75°C, while the average temperature is around 70°C.
The whole point of the fan set up is to move air through the case.
In one side, out the other side.
 
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In my mind, the 3 fans on the vertical 'back' wall of the chassis would pull air 'IN', as they look to be doing now.

Bottom fans are also intake.

Top radiator fans looks to be set to exhaust, or blow out through the radiator and the top of the chassis.

Next question would be what your AIO pump speed is set to (is it 100% or set to PWM ramp?) as well as what your AIO fans are set to.
 
In my mind, the 3 fans on the vertical 'back' wall of the chassis would pull air 'IN', as they look to be doing now.

Bottom fans are also intake.

Top radiator fans looks to be set to exhaust, or blow out through the radiator and the top of the chassis.

Next question would be what your AIO pump speed is set to (is it 100% or set to PWM ramp?) as well as what your AIO fans are set to.
I haven't made any adjustments to the pump speed or AIO fan speeds.


Also, I have ASUS Armoury Crate installed, but I disabled fan control within the software and instead ran Q-Fan Tuning through the BIOS.


If you can guide me on what to check in the BIOS for my ASUS Z790 TUF Gaming motherboard, I can check and answer your questions regarding pump speed and AIO fan speeds.
 
In my mind, the 3 fans on the vertical 'back' wall of the chassis would pull air 'IN', as they look to be doing now.

Bottom fans are also intake.

Top radiator fans looks to be set to exhaust, or blow out through the radiator and the top of the chassis.

Next question would be what your AIO pump speed is set to (is it 100% or set to PWM ramp?) as well as what your AIO fans are set to.
Pic-1: View: https://imgur.com/O0jrGeJ


Pic-2: View: https://imgur.com/5N6XObW
 
Would my case's internal airflow be negatively affected in this setup?


In games, my CPU temperature averages around 90-95°C, depending on the game, and it sometimes spikes to a maximum of 100°C, as seen on HWMonitor.


As for my GPU, the maximum temperature reaches 75°C in the most demanding games, while the average stays between 65-70°C.


If my current setup is correct, I will leave it as it is.
Since the pictures you uploaded indicate that your AIO fans start running at 100 percent at 65C there's not much more you can do to decrease your cpu temp. Some of what you are seeing may be the result of how different software defines the hardware differently. For example, HWMonitor defines the "CPU" temp based on what's commonly called the "CPU Package" temp which includes all of the components in the cpu. Other programs like HWiNFO and Aida64 Extreme define "CPU" based on just the computing cores of the CPU which results in them reporting lower temps. So depending on your view and software preference your CPU temp may seem higher than it really is. Unfortunately it is hard to determine what the ASUS motherboard views as the CPU temp since that can only be viewed in the bios (or maybe Armoury Crate) and can't be viewed while you're playing games. But your setup is fine and you can leave it as it is. (If you should ever desire to rebuild your computer then you could get a 420mm AIO radiator and a case that will hold it but that's just a wish for the future.)

https://www.google.com/search?q=wha...d=chrome&ie=UTF-8&sei=dHHLZ5yOKdPJkPIPkN-QsQw
 
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Since the pictures you uploaded indicate that your AIO fans start running at 100 percent at 65C there's not much more you can do to decrease your cpu temp. Some of what you are seeing may be the result of how different software defines the hardware differently. For example, HWMonitor defines the "CPU" temp based on what's commonly called the "CPU Package" temp which includes all of the components in the cpu. Other programs like HWiNFO and Aida64 Extreme define "CPU" based on just the computing cores of the CPU which results in them reporting lower temps. So depending on your view and software preference your CPU temp may seem higher than it really is. Unfortunately it is hard to determine what the ASUS motherboard views as the CPU temp since that can only be viewed in the bios (or maybe Armoury Crate) and can't be viewed while you're playing games. But your setup is fine and you can leave it as it is. (If you should ever desire to rebuild your computer then you could get a 420mm AIO radiator and a case that will hold it but that's just a wish for the future.)

https://www.google.com/search?q=what's+the+difference+between+the+cpu+package+temp+and+the+cpu+temp&rlz=1C1VDKB_enUS1151US1151&oq=what's+the+difference+between+the+cpu+package+temp+and+the+cpu+temp&gs_lcrp=EgZjaHJvbWUyBggAEEUYOdIBCTIzMzY4ajBqMagCALACAA&sourceid=chrome&ie=UTF-8&sei=dHHLZ5yOKdPJkPIPkN-QsQw
Even if it reaches 100°C, I can use it for years without any issues, and I don’t need to do anything, right?


Of course, electronics are always a matter of luck, but putting that aside, everything is normal, correct?