Loud fan / Fan splitter advice

[Andylyon87]

Fans are noticeably loud, despite the temps for CPU/GPU being low. Had a quiet preset in bios which thought would solve, however even after a custom curve reducing them to 20% up to 50C they run loud :/ Not sure why this would be. They are Thermaltake fans tt-1225 that come in the pure 12 argb sync triple packs, they are marketed as pwm 500-1500 rpm fans. 25.8db

The other thing is they came with 3 way fan splitters, looking at the pin outs it seems there is 1x 4 pin and 2 x 3 pin for the splitter, going to a fan header. I assume this is for the rpm feedback?

When I use my hand to check the 3 on the same splitter feel like they are moving different amounts of air, despite being right next to each other. Anyone come across that before??

 

[venomx]

The other thing is they came with 3 way fan splitters, looking at the pin outs it seems there is 1x 4 pin and 2 x 3 pin for the splitter, going to a fan header. I assume this is for the rpm feedback?

Can't help much but yes it's supposed to be like that.. Here are mine and they work perfectly...

 

[Andylyon87]

Can't help much but yes it's supposed to be like that.. Here are mine and they work perfectly...

Cheers for that, that eliminates that bit then. I guess at this point its a case of disconnect them individually and see which one is making the most noise and go from there

 

[pp111]

At anything up to about 65% they should be pretty much silent. I am just wondering if thy are being incorrectly identified or something? What header are you plugging them in to?

 

[Mike_J_Smith]

Fans are noticeably loud, despite the temps for CPU/GPU being low. Had a quiet preset in bios which thought would solve, however even after a custom curve reducing them to 20% up to 50C they run loud :/ Not sure why this would be. They are Thermaltake fans tt-1225 that come in the pure 12 argb sync triple packs, they are marketed as pwm 500-1500 rpm fans. 25.8db

The other thing is they came with 3 way fan splitters, looking at the pin outs it seems there is 1x 4 pin and 2 x 3 pin for the splitter, going to a fan header. I assume this is for the rpm feedback?

When I use my hand to check the 3 on the same splitter feel like they are moving different amounts of air, despite being right next to each other. Anyone come across that before??

I had this (different fans connected to the same splitter running at different speeds). It was fixed by going through the connections and making sure they were all thoroughly seated.

Do you have software to monitor and change the curves in windows rather than BIOS? Then you can play around with settings under load. I have fans with similar manufacturer stated specs, and they are pretty quiet. I've got 9 of them in the case next to me, setting them to 60% each and I can't hear them against the background noise (although the washing machine is on!).

 

[Andylyon87]

Managed to open the back up, checked the fan splitter and thought maybe one fan is misrepresenting the rpm. Swapped and the problem was solved.

Putting the case back on and the fan span up again. So I wiggled the splitter. It relaxed again. So I am thinking a damaged fan splitter is the issue. So I've sorted new ones to resolve the issue.

Thanks for help all.