Fan count limit on a single header - please check my understanding

[Wobblycogs]

I've just bought myself an Asus X570-F motherboard and it's got two 4-pin case headers, each one can supply 1A @ 12V.

 

I'm looking at populating the case with Noctua NF-F12 or NF-P12 fans, 3 at the front and probably one at the back. Looking at the spec for the fan it says they draw 0.09A max, that would seem to imply I could theoretically run ten from a single header (assuming I could find a splitter). Is that correct?

 

I assume I'm good to run three of these fans off a single header? Are the Noctua fans particularly low power or something?

 

Thanks.

[Kilrah]

Correct.

[Origami Cactus]

Yes, 3 fans per header is the usual wisdom, but these fans, i would put 5 of those.

 

Yes, these are some real low power fans, usual fans draw 0.2A.

[AndrewB121]

3 should be fine, definitely wouldn't want to try 10 haha. 

[Wobblycogs]

Thanks all.

 

Don't worry I won't be trying to cram ten or twenty fans in the case, there wouldn't be space for anything else.

 

I threw one of these powered splitters (CA-PWM-03) in the basket when I was getting the rest of the bits because I assumed that I would need extra power but I think I'll look for an unpowered splitter now.

[Origami Cactus]

8 minutes ago, Wobblycogs said:

Thanks all.

 

Don't worry I won't be trying to cram ten or twenty fans in the case, there wouldn't be space for anything else.

 

I threw one of these powered splitters (CA-PWM-03) in the basket when I was getting the rest of the bits because I assumed that I would need extra power but I think I'll look for an unpowered splitter now.

Unpowered would work fine yeah

[Bitter]

The Silverstone PWM hub may be cheaper than that splitter and can be mounted more cleanly if that matters for you.