[Negotiator]

I got a fan for the heatpipe with the mobo. I also got a zalman HSF for the cpu, so do i need to use the fan?

 

[twisted5]

It states in the manual and on the fan packaging for use with passive cooling only(water cooling etc). So if you have a fan on the cpu then no you can not use it. If you use both it will starve your cpu fan of the air needed.