Will adding more fans really break my case?

Moleyman69

Honorable
Jul 29, 2014
21
2
10,515
Hi everyone,

I currently have a Define R4 case, with 2 Silent Series R2 intake fans in the front and 1 exhaust R2 in the rear. In the top I have a H100i with 2 Noctua NF-F12. The 3 x R2 fans are connected to the Define R4's built-in fan controller which can connect up to 3 fans and as far as I can tell supports up to 15W.

I have been toying with the idea of adding more fans to the case just to help with airflow and came across 3 Noctua A14 FLX fans for a reasonable price so ordered them and they should be with me this week.

I had planned on replacing the R2 fans with the Noctuas using the R4 fan controller. Then I planned on using 2 of the R2 fans as well; one in the bottom intake and one in the side intake. BUT I wouldn't be able to hook these extra fans up to the R4 fan controller because the Noctuas would be using all 3 fan controller inputs!

With me so far?

So, I wanted to find some 3-pin fan Y-splitters so that I could put the 2 intake Noctuas on 1 fan controller cable, 1 exhaust Noctua on 1 fan controller cable and finally the 2 R2 fans on the remaining fan controller cable.

However, I cannot get a definitive answer on whether this is a safe thing to try. I have googled and some people say yes it will be fine, but I have also seen a reply from Fractal Design themselves that says to not connect more than 3 fans as this will cause the fan controller to break.

Does anyone have any real-world experience of this? Anyone with a Define R4 using more than 3 fans on the built-in fan controller?

If anyone has any advice / hints & tips etc that they could share I would be really grateful (and so would my fan controller, I'm sure!).

Many thanks in advance.

All the best,

Moley
 

Moleyman69

Honorable
Jul 29, 2014
21
2
10,515
Thanks for both taking the time to reply.

One reason that I wanted to add more fans was to ensure positive pressure inside the case, as currently I have 2 intake and 3 exhaust (if you include the 2 Noctuas on the H100i that are pushing air out of the case through the radiator).

Would this not be a good idea?

i am fairly new to all this, so any help is great.

Thanks again,

Moley
 

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