Is there a way to make chassis fan behave as if it were cpu fan?

[devilgodspider]

First why I connected it to the Chassis fan:
I only realized how hard it was to do it properly after I had the Noctua NH-D15 heatsink and fans all placeed. So I connected the power cable to the chassis fan 4-pin and made it so BIOS ignored there not being a CPU fan running.

So far so good and temps all stable, but I'd like to be extra sure so that the system knows that if cpu temp increase/decrease that specific chassis fan should increase/decrease perhaps a bit more directly.

From the research I have done it seems Speedfan can help me do this, but I do not know how to operate the program very well, if anyone can guide me I'd really be thankful

 

[volkgren]

PWM Fan Hub - https://www.amazon.com/Phanteks-PWM-Fan-Controller-PH-PWHUB_01/dp/B00M0R05WE

 

[devilgodspider]

PWM Fan Hub - https://www.amazon.com/Phanteks-PWM-Fan-Controller-PH-PWHUB_01/dp/B00M0R05WE

I'd prefer a software solution if possible, but if buying hardware is the only option, then I'll probably prefer re-assembling the cpu cooler.

 

[why_wolf]

You should be able to set the fan curve in the BIOS for fans on most modern motherboards.