Newbuilder1

Welp I think I figured it out.. these are not modern fans.. these are them and they operate between 7 volts and 12.. https://translate.googleusercontent.com/translate_c?depth=1&hl=en&nv=1&rurl=translate.google.com&sl=auto&sp=nmt4&tl=en&u=https://www.nexthardware.com/recensioni/corsair-obsidian-500d-1333/7/&xid=17259,15700021,15700186,15700190,15700256,15700259,15700262,15700265&usg=ALkJrhiA1xveyNL9LuxStgunnt5RlZiUPg

yeah i totally get in no worries.

I have the fans that came with the Corsair 280x nonrgb case. They are 120mm's on the interor side of the fans there is this number 31-004801 followed by 31-004801 These are not RGB fans The max speed is 2000rpm right or am i wrong?

I have more information that might help out. I downloaded dragon center and manually adjusted the two system fans.. I also want to mention that system fan 1 is being used by a 4 pin connector that splits to 2 tiny 60mm fans that can pull 3000 rpm and has absolutely no reading problems or weird fluctuations. Now when i adjusted system 2 and 3 and put them on max the most they could go was around 1200 but online it says there max rpm is 2000 rpm.. I also get the right numbers reported but then it jumps to an extremely high number for a second. What is really really weird when I put sys fan 2 and 3 on PWM mode then i can hear them actually kicking up but on DC i cannot bring the voltage up a certain amount i guess. https://ibb.co/Scqs82T https://ibb.co/dgWvyx4 https://ibb.co/XtrmCf8 https://ibb.co/DkF2w31

I have noticed that when I do flash my BIOS the fans behave better and when i start to tweak the settings they start to get all messed up.

Thank you for helping me figure out this issue.. So i double checked and I have no other command center or anything running.. I also put it to system and there is no change.. What is really weird is I cannot make the fans go max RPMs either When i try this they just spike up and go back to idle speeds very quickly.. I just changed windows 10 boot from CSM to UEFI but that didnt seem to do anything either.. is it possible that my PSU is not enough? What is even more weird is that this was not happening when I first bought my components. This became a thing.. Is it possible my motherboard got shorted out?

Thank you again for your quick response. I took some pictures to help explain. https://ibb.co/ZGqkm7G https://ibb.co/jGmjyCY https://ibb.co/JnVVykK https://ibb.co/D5vtzzq https://ibb.co/whHFBFb https://ibb.co/PQ3XfB8 https://ibb.co/k6fY4Ln In the board explorer of my MSI BIOS. It shows sys fan 2 flashing on and off every couple of seconds or so.. This used to happen to sys fan 3 and sometimse both but in this circumstance it is only sys fan 2.. That is the first weird thing Second weird thing in the graphs.. As you can see sys fan 3 should be at a higher voltage but it is very low.. sys fan 2 is bouncing all over the place when my system is idling in bios at 36 degrees.. what the heck is causing this.. I had my fans set to PWM for awhile, Could that have messed them up? Is there a driver I should reinstall? I have reset the cmos once and flashed the bios acouple times already. Is my power supply failing!?

Thank you for your quick response I appreciate it! I have one problem.. I have set both sys 2 and 3 fans to the same curve however sys 3 fan is always at a much lower rpm then sys fan 2 even though they are set to the same curve.. also when I max out the volts the fans do not go nearly as high in rpm when they are set to PWM, but then they bounce all over. This is seen within he bios in the fan control. In icue I’m seeing sys fan 2 hit around 1900rpms with system fan 3 at 900rpm.. icue also is showing a 4th fan with Rpms however my mobo doesn’t have 4 system fans..

Hi Everyone, I purchased a 280x NonRGB case. It came with two 120mm fans. I recently have been having problems with my MOBO. The fans can behave erratically by spiking to the high rpms and then dropping to 0 and then back to idle.. I was told these fans are PWM however they are not LED and they have 3 pins.. Doesn't this mean it should be to DC for these fans? Everything I read says a 3 pin connector should be set to DC. Thank You!

I believe you’re wrong. Even though my motherboard has 4 pins the fan connectors are only 3 pin and everything I’ve read online says 3pins should be set to DC

Is it possible that these two fans are dying? They both were working well in the past, i noticed this problem more recently however, I did remember seeing the fan ports turning on and off in the hardware explorer ( it's a picture of the motherboard and you can see the fan ports blinking on and off )

The first batch of pictures I sent are the only options for controlling fan speed and such

ah okay i understand.. even when i have a consistent load like playing fortnite the third system fan is still having an issue. is it normal for the pump to spike too? https://ibb.co/Ss5Bw1s

Here is a new picture https://ibb.co/yRG6Fwt. Also when i go to board explorer in the bios it shows the connections turning on and off

They are connected straight into the MOBO into system fan 2 and 3. Source of their fan curve is within the bios of the MOBO. I will set them to PWM however they remain erratic .