Connect H110 to molex?

Greetings,



I am currently building a new system and need some help with my fans and where/how to connect them. I have a Corsair H110 pump as heading says.. A Corsair 450D chassie and Asus VII Hero motherboard.



Asus VII Hero has 4x CHA_FAN headers + CPU_FAN and CPU_OPT. And I have in total 5 fans (2x140mm front, 1x120mm rear stock + H110 Fans (replaced with NF-A14 ippc 2000 PWM fans)



And so far as I've read, it is important to keep the H110 pump (or all other pumps) connected so it runs at 100% all the time.



I want to set the voltage down to 8-9V on the Noctua fans, as they then perform the same as H110 stock fans, but will run at 20dB instead of 35dB with stock fans.





How would you best do this?



I was thinking about connecting H110 pump to molex, as it then will run at 100% all the time, as recommended.. Then connect Noctua fans to CPU_FAN and CPU_OPT and volt them down to 8-9V. Then connect the Chassie fans to CHA_FAN headers.



OR



Connect H110 pump to CPU_FAN as recommended. Then Connect rear fan to molex and Noctua CPU fans + two front fans to CHA_FAN headers..



OR



Connect two front fans to CHA_FAN with Y-split to CHA_FAN, and Noctua CPU fans + rear fan to CHA_FAN and H110 pump to CPU_FAN. This way all fans will be connected to CHA_FAN and I can voltage control all of them with Asus Fan Xpert. In my MB manual it says CPU_FAN header can take fans up to 1A and 12W, it doesn't say anything about CHA_FAN and CPU_OPT fan.. Don't know if they're rated the same.. Noctua fans use 0,18A/2,16W each at 12V.





Please advise me what would be best or other suggestions. What I mostly depend on is to set my Noctua fans to 8-9V, rest can run on 100% as they are quite silent.





Thanks in advance