Noctua Fans only running at 50% speed

[maikeru89]

Hey guys, 
So I have an issue with my brand new Noctua NF-F12 industrialPPC-3000 fans. Whenever I set the fan speed to 100% it only maxes out at 1600 rpm. Granted I currently have 2 rads (one is a placeholder for a my preordered gpu waterblock) and the 6 fans provide enough cooling power for the most part, but I just want the option for the full speed i paid for. So far I have tried a 3way splitter on the CPU header and the CPU OPT, 3 fans each. I have also tried putting one splitter on a chas header, same issue. I just installed a silverstone 8 way splitter with sata power. same speeds. I looked in the manual for the power draw and the headers provide 12 volts with 1 amp and the fans only take .3 amp each so they should be getting enough power. is there something im missing?
Asus Prime Z390-A (newest BIOS installed)

Intel 9700K

 

Side question which is less important to me, but I was trying to use speedfan and the program does not recognize that any fans are installed on my board at all while HWMonitor sees my fans. 
Another side question.... what is this Chassis #5 fan running at 4800 rpm in the picture im posting

[Hip]

Can't you just change the speed in BIOS?

[BigDamn]

Should be able to change the fan speed in the BIOS. Alternatively, you could get a 4pin fan connector to molex adapter and have it get its power directly from the PSU. This would ensure 100% speed at all times.

[maikeru89]

21 minutes ago, BigDamn said:

Should be able to change the fan speed in the BIOS. Alternatively, you could get a 4pin fan connector to molex adapter and have it get its power directly from the PSU. This would ensure 100% speed at all times.

I already have a silverstone fan hub connected directly to sata power from the PSU. same story. And when i try to set speeds from the bios to 100% it still only goes to 1600 rpm

[_Hustler_One_]

There are 2 models of iPPC fan, they're the 12v and the 24v, check which one is yours.. If you have the 24v while most of motherboard fan headers are 12v, then you will only reach 50% of the fan speed because it run 12v of 24v rated.

[maikeru89]

2 minutes ago, _Hustler_One_ said:

there is 2 models of iPPC fan, they're the 12v and the 24v, check which one is yours.. If you have the 24v while most of motherboard fan headers are 12v, then you will only reach 50% of the fan speed because it run 12v of 24v rated.

omg.... youre right

i thought these things were 12 v and i swore it was.. question is is there anyway i can get 24v to these fans?

 

[_Hustler_One_]

38 minutes ago, maikeru89 said:

omg.... youre right

i thought these things were 12 v and i swore it was.. question is is there anyway i can get 24v to these fans?

 

Only if your PSU can output 24v, then you can powered it up from there via fan hub which also must be capable to work with 24v, but because most of fan hubs are also rated at 12v so I'm not sure if we can do that.

 

On the motherboard side, I haven't found if there is a consumer grade motherboard which has 24v fan headers, maybe someone else have found that type of motherboard, I don't know..

 

Can you return the fan and get the 12v ones?

That will be better for you, if you still want to run at 3000 RPM..

Spoiler

 

https://noctua.at/en/products/fan/industrial

 

[maikeru89]

1 hour ago, _Hustler_One_ said:

Only if your PSU can output 24v, then you can powered it up from there via fan hub which also must be capable to work with 24v, but because most of fan hubs are also rated at 12v so I'm not sure if we can do that.

 

On the motherboard side, I haven't found if there is a consumer grade motherboard which has 24v fan headers, maybe someone else have found that type of motherboard, I don't know..

 

Can you return the fan and get the 12v ones?

That will be better for you, if you still want to run at 3000 RPM..

  Reveal hidden contents

 

yeah thats the plan. Im sending them back after i get the new ACTUALLY 12v fans come in. thanks for pointing that out, ive been pulling my hair out for days

[_Hustler_One_]

5 minutes ago, maikeru89 said:

yeah thats the plan. Im sending them back after i get the new ACTUALLY 12v fans come in. thanks for pointing that out, ive been pulling my hair out for days

That's good.. Have a nice day..

[LogicalDrm]

Just remember always test fans one-by-one if you have issues. Also, splitter only shows speed of single fan, the one connected to header with rpm sensor.