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Airflow speed limits?

Phil Jermakian
By Phil Jermakian
in Cooling
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Go to solution Solved by fluxdeity,

Your case will pull the air in from wherever else it can. What you can do is get a program to change fan speeds if they are PWM, or try changing the speeds in BIOS/UEFI.

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My case now has 2 temperature probe controlled 80mm fans at the back pushing air out and 2 92mm fans at the front pulling air in.  My problem is the 80mm temp probbed fans ramp up to 2400 rpm when my GPU gets hot but my old Gigabyte Z77X-D3H Mobo does not ramp up the 92mm fans past 1400rpm ever.  

 

           2500rpm out   ---->>

                                     ---->>

 

1400rpm in

---->>

---->>

 

Do you think the presence of the 1400 rpm fans is throttling airflow coming in at all slowing down how fast the other 2 fans can pull air out?

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  • Solution

Your case will pull the air in from wherever else it can. What you can do is get a program to change fan speeds if they are PWM, or try changing the speeds in BIOS/UEFI.

CPU: Ryzen 5 2600 4ghz @ 1.35v  CPU Cooler: Mugen 5 Rev b  Motherboard: MSI B450 Gaming Pro Carbon  GPU: Zotac RTX 2060 +150/+1000 Memory: 16GB Viper 4 @ 3200 CL14 Samsung B-die  Storage: 1TB Patriot VPN100 NVMe; 500GB 860evo; 128gb 840pro Case: Cooler Master Q500L  PSU: CX750M V2 Operating System: Windows 10 Pro Other: 6 Corsair LL Fans; 2 aRGB Strips

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7 minutes ago, Phil Jermakian said:

Do you think the presence of the 1400 rpm fans is throttling airflow coming in at all slowing down how fast the other 2 fans can pull air out?

No.

If you ever need help with a build, read the following before posting: http://linustechtips.com/main/topic/3061-build-plan-thread-recommendations-please-read-before-posting/
Also, make sure to quote a post or tag a member when replying or else they won't get a notification that you replied to them.

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