noctua NF-12PWM 120MM premium fan speed issue

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11blackjack11

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Mar 22, 2015
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so i recently bought new fans for my pc replaceing the ones inside i went with the noctua brand
i installed them they work they spin but when i boot up my pc it beeps a couple times and it brings up a error message about the cpu fan i go into bios and both the cpu_fan and cpu_opt_fan run at 440+ rpm i switch em to turbo it slowly goes up to 500 rpm i turnned it on awhile go now its at 780 rpm and i know once i turn it off its gonna be at 440+ rpms again can enyone tell me why this is happening and how to fix it?
 
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i found out that the noctua fans are causeing (cpu fan error) when i boot up the pc i removed the fan on the cpu and re installed my old one and it worked fine but when i plugged in the other fan at the back along with the cpu fan it started giveing the cpu fan error again wtf? i unplugged the noctua fan at the back and it boots up just fine without giveing me the error this is getting anoying
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why_wolf

why_wolf

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Aug 28, 2015
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are you using the 'low noise' adapter that Noctua includes with the fan? That caps the maximum RPM the fan will do regardless of what you set the BIOS to do.

Have you tried plugging it into another fan connector (one of the case fan ones) to see if the RPM goes higher? Also what mother board do you have, there might be some particular quirk with the one you own?
 
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11blackjack11

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Mar 22, 2015
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no im not useing the low noise adapters i tried switching around a few no changes what so ever and down below is a list of the parts i got inside the rig

PC specs

motherboard
sabertooth X79

ram memory
corsair dominator platinum 16gb 1600 MHs

SSD
Crucial MX200 500GB

harddrive
Seagate Barracuda 2TB 7200 rpm

video card
EVGA GTX980 FTW ACX 2.0 4GB SLI

CPU proccessor
intel core I7 4930K

power supply
corsair 1300EVGA supernova 80 gold plus

cpu cooler
Arctic Cooling Freezer i11 74.0 CFM CPU Cooler

case
Cooler Master Storm Stryker (White) ATX Full Tower Case
 
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why_wolf

why_wolf

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Aug 28, 2015
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hmm strange. The sabertooth is really good for fan control too (my last board was one) so it seems unlikely that you are misreading the settings in the BIOS. Hopefully someone who has a sabertooth will come by and you can compare settings. But when I had one it just worked, didn't have to do anything. Are any of your other fans spinning slowly too or is it just the Noctua?

Post a pic of the settings page if you can. I doubt the fan itself is a dud as Noctua QA is really good but it happens so you may just have to RMA. Sorry.
 
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11blackjack11

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Mar 22, 2015
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i know i should not have this problem with a sabertooth could be cause i just set the fans up wrong idk im gonna open it up again and go by the god awful set up guide this time...i just plugged each fan to each free space i saw that wasnt taken but yeah hopefully someone else comes along and figures this out i had it up to here lol
 
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1

11blackjack11

Distinguished
Mar 22, 2015
104
2
18,595
i found out that the noctua fans are causeing (cpu fan error) when i boot up the pc i removed the fan on the cpu and re installed my old one and it worked fine but when i plugged in the other fan at the back along with the cpu fan it started giveing the cpu fan error again wtf? i unplugged the noctua fan at the back and it boots up just fine without giveing me the error this is getting anoying
 
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