8x NF-A14 indu. PWM on two MOBO headers? Will it blow up?

[Metallus97]

Hey guys a quick  question:

 

I have this MOBO: MSI Z87-GD65 https://de.msi.com/Motherboard/Z87-GD65-GAMING.html#hero-overview

It has 5x 4pin PWM headers.

But the silly thing is only 2 of them (the CPU ones) do support RPM settings under 50%

I want to run all my 8 NF-A14 indu under 50%.

 

So here is the question: Will atacing 4 of those fans be to much for one header?

I am plaining to do so with the noctua Y cabels.

Since i am running a full loop there a no other fans installed in my pc.

 

Thanks guys

[Hiitchy]

It would be way too much power for one header to handle. If you were to get a fan controller with a power connector that goes to your power supply, you'd be able to control the fans individually through the controller. Or you can get a Silverstone 8 port fan header which connects 8 fans through a hub to 1 PWM header on your motherboard, and uses a sata connector for power.

[Metallus97]

Just now, Hiitchy said:

It would be way too much power for one header to handle. If you were to get a fan controller with a power connector that goes to your power supply, you'd be able to control the fans individually through the controller. Or you can get a Silverstone 8 port fan header which connects 8 fans through a hub to 1 PWM header on your motherboard, and uses a sata connector for power.

okokok thanks. will this silverstone box also give every fan the correct PWM signal? Can you shoot me a link?

and so 4x is allso to much for one header?

[NumLock21]

Yes, it will blow up, down, left, and right, depending on where you install your case fans.

[Hiitchy]

3 minutes ago, NumLock21 said:

Yes, it will blow up, down, left, and right, depending on where you install your case fans.

Damn. What if he just doesn't install case fans? 

[Metallus97]

7 minutes ago, Hiitchy said:

Damn. What if he just doesn't install case fans? 

THEN my pc would blow up in every direction!

Those fans are all rad fans so... water above 100 C not cool

[Hiitchy]

5 minutes ago, Metallus97 said:

okokok thanks. will this silverstone box also give every fan the correct PWM signal? Can you shoot me a link?

and so 4x is allso to much for one header?

Sorry, should have mentioned this before. I own one of these, it's great for what it's worth.

 

https://www.amazon.ca/SilverStone-Technology-All-Black-CPF04/dp/B00VNW556I/ref=sr_1_fkmr0_1?ie=UTF8&qid=1498505884&sr=8-1-fkmr0&keywords=Silverstone+fan+controller+hub

 

As for controlling fans, it's 50/50, you may want to look into an alternative.

[Metallus97]

5 minutes ago, Hiitchy said:

-snip-

As for controlling fans, it's 50/50, you may want to look into an alternative.

Hm? sorry i dont understand

and thanks fr the link

[Hiitchy]

Just now, Metallus97 said:

Hm? sorry i dont understand

and thanks or the link

Sorry, let me try this again:

 

So you originally asked if it were possible to find another way to control the fans and bring them below 50%. I missed this part of the topic. So what I would consider is finding a fan controller that fits your case, and using the fan controller itself to control the speeds. This is actually what I do with my PC fans. I don't think the Silverstone fan hub controller will work in this instance unless it is the 4 pin fans you are using. I would have to look into this for you. But as I said, I would recommend the fan controllers that fit in the case.

[Metallus97]

1 minute ago, Hiitchy said:

Sorry, let me try this again:

 

So you originally asked if it were possible to find another way to control the fans and bring them below 50%. I missed this part of the topic. So what I would consider is finding a fan controller that fits your case, and using the fan controller itself to control the speeds. This is actually what I do with my PC fans. I don't think the Silverstone fan hub controller will work in this instance unless it is the 4 pin fans you are using. I would have to look into this for you. But as I said, I would recommend the fan controllers that fit in the case.

Alright got you sry

So: I am using all 4pin PWM fans. But i have read that many of those splitters etc have problems with giving the fans the correct PWM signal (although plugged in via a 4pin). 

As fo the fan controller: I simply dont have any room for a dedicated one and want to do it with software.

[Hiitchy]

Just now, Metallus97 said:

- SNIP -

I understand. unfortunately what it comes down to is these PWM headers only have so much voltage they can give, and so much they can handle. I'll give you an example:

 

I have a Corsair H100i v2 AIO cooler. The manual instructed that the fans should be plugged into the radiator so that they can be monitored through the software. In the same token, I noticed some weird grinding sounds while playing games. This was coming from the fans, but I thought it was coming from the radiator or pump. As it turns out, those two PWM fan headers from the radiator were being ran into 1 PWM fan header on the motherboard. The higher the fans go, the more power they require. The issue with this is that if they are running at a full 12V connection from the motherboard and splitting out to 2 PWM connections for the radiator fans, it means that the signal would be split to 6v for each fan. 6 volts to each fan would not be enough for them to ramp up to full speeds, which results in the grinding, or loss of power.

 

I can understand if you don't have space, but unfortunately there isn't much else I can suggest, so perhaps someone else can chime in with a better answer for you.

[Metallus97]

5 minutes ago, Hiitchy said:

I understand. unfortunately what it comes down to is these PWM headers only have so much voltage they can give, and so much they can handle. I'll give you an example:

 

I have a Corsair H100i v2 AIO cooler. The manual instructed that the fans should be plugged into the radiator so that they can be monitored through the software. In the same token, I noticed some weird grinding sounds while playing games. This was coming from the fans, but I thought it was coming from the radiator or pump. As it turns out, those two PWM fan headers from the radiator were being ran into 1 PWM fan header on the motherboard. The higher the fans go, the more power they require. The issue with this is that if they are running at a full 12V connection from the motherboard and splitting out to 2 PWM connections for the radiator fans, it means that the signal would be split to 6v for each fan. 6 volts to each fan would not be enough for them to ramp up to full speeds, which results in the grinding, or loss of power.

 

I can understand if you don't have space, but unfortunately there isn't much else I can suggest, so perhaps someone else can chime in with a better answer for you.

Got it thanks verry much dude!

ill try the hub then to get some additional power in