need help choosing motherboard.

Solution
Dear,

Motherboard, which you have considered i.e Gigabyte Z97X SLI has following fan options:

1 CPU Fan Header
1 CPU_Opt Fan Header
3 System Fan Headers

You've 4 fans so utilizing 1 CPU_Opt fan header and 3 system fan headers you can mount your 4 fans on the mobo. Also, in case of more than 4 fans you can still mount them on the mobo using Y splittter cables (See the pic in previous post)
Check this mobo. It has 2 CPU fan headers and 3 system fan headers:

http://uk.pcpartpicker.com/part/msi-motherboard-z97g43gaming

Also this one has 1 CPU fan header and 3 system fan headers:

http://uk.pcpartpicker.com/part/gigabyte-motherboard-gaz97d3h

Also don't make fan headers as sole criteria. You can always molex your fans. Something like that:

YFanSplitterCable_zpsbabe1ebe.jpg


MolexConn1_zps3274b3e1.jpg
 
Dear,

Motherboard, which you have considered i.e Gigabyte Z97X SLI has following fan options:

1 CPU Fan Header
1 CPU_Opt Fan Header
3 System Fan Headers

You've 4 fans so utilizing 1 CPU_Opt fan header and 3 system fan headers you can mount your 4 fans on the mobo. Also, in case of more than 4 fans you can still mount them on the mobo using Y splittter cables (See the pic in previous post)
 
Solution