fan splitters with different sized fans

[Bane]

Motherboard has two 4-pin PWM fan heads.
Case has 4 fans. 2x 120mm at bottom, and 1x 120mm and 1x 140mm fan at top.

Is it fine to have the top 120mm and 140mm fan shared on a header? Or better to have all 3x 120mm on same header and 140mm on its own header.

 

[MissChief]

Whatever is easiest cabling wise, but the 140mm can spin slower than the 120mm and deliver the same amount of air. I'd be tempted to keep the 140mm on a separate header so you can amend the fan individually.

 

[CaNsA]

Is it fine

Yes