Fan splitter amp math check

[tikker]

According to the manual of my motherboard the CPU fan can take a maximum of 1A. I can't find something about the chassis fan connectors, but I'm assuming this is the same. For my setup I'll be using two Nidec Gentle Typhoons (rated at 12V/0.083A, and 0.44A peak current according to the store) and three Corsair SP120 RGBs (included with the case, rated at 12V/0.30A).

 

Since I don't have enough headers to connect all of these fans to the motherboard, is it safe to use a splitter?

I'm thinking 2x0.083A = 0.166A (or 2x0.44A = 0.88A peak) on one header and 3x0.30A = 0.9A on the other should technically be fine, but I'd like to be sure before frying anything

 

[Edit] My motherboard is the Asus ROG Strix Z270F Gaming

[Enderman]

2-3 fans per header is the max recommended, so yeah it will be fine.

[tikker]

22 minutes ago, Enderman said:

2-3 fans per header is the max recommended, so yeah it will be fine.

Perfect. Thanks

[GuruMeditationError]

Does that extend to 140mm fans? I've got two 120mm fans that draw 0.17 amps and a 140mm fan that draws 0.32

I've read that fan headers on modern boards from more reputable manufacturers are often good for up to 1 amp but I'm concerned there might be a spike when they're first turned on that might eventually burn out my header.

Not sure if 2-3 fans is just for 120mm as they are quite a bit more power efficient than 140mm, and/or if it takes into account a spike and/or resistance in the motor at start-up.

Advice would be most appreciated. 

[GuruMeditationError]

20 minutes ago, GuruMeditationError said:

Does that extend to 140mm fans? I've got two 120mm fans that draw 0.17 amps and a 140mm fan that draws 0.32

I've read that fan headers on modern boards from more reputable manufacturers are often good for up to 1 amp but I'm concerned there might be a spike when they're first turned on that might eventually burn out my header.

Not sure if 2-3 fans is just for 120mm as they are quite a bit more power efficient than 140mm, and/or if it takes into account a spike and/or resistance in the motor at start-up.

Advice would be most appreciated. 

(actually might just start a new thread)

 

[tikker]

On 4/25/2017 at 3:56 PM, GuruMeditationError said:

Does that extend to 140mm fans? I've got two 120mm fans that draw 0.17 amps and a 140mm fan that draws 0.32

I've read that fan headers on modern boards from more reputable manufacturers are often good for up to 1 amp but I'm concerned there might be a spike when they're first turned on that might eventually burn out my header.

Not sure if 2-3 fans is just for 120mm as they are quite a bit more power efficient than 140mm, and/or if it takes into account a spike and/or resistance in the motor at start-up.

Advice would be most appreciated. 

The math works out so If it's ok in my case you should be fine as well I'd say.