PCFANS RPM Speed

[xxxmasterpvpxxx]

Hey guys,
I have just added three case fans to my computer (Cryorig QF120 Balance), and connected them to a 1-8 pin Silverstone connecter hub, which is connected through SATA power cable and a 4 pin female to the motherboard. I connected all the fans to hub. When I turn on my PC, the fans ran at around 1550 RPM at all times. I tried to use Gigabytes SIV with my Gigabyte GA-H170-HD3 motherboard, but it states that my maximum fan speed is 1550, and the minimum is 1535. it will not let me change these values, but when I change the fan speed from normal to full speed in the Smart Fan 5 Auto, it will have a slight increase which I can hear, but it does not do anything when it goes from normal to silent.Everything is also compatible with PWM and everything is 4-pin. When I change anything to do with the fans in the advanced section of Smart Fan 5, it does not effect the fans in anyway. I have entered the BIOS and only have options for changing the fan speed control between silent, normal, manual, and full speed, which none of them work.


Thanks in advanced for the replies.

 

[Lutfij]

The PWM fan hub should have it's main connector go onto a 4 pin fan header that has true PWM support. For the case of this scenario, it's the CPU_FAN.

 

[Paperdoc]

Lutfij is correct. IF you have the Silverstone model SST-CPF04 PWM Fan Hub with eight output ports, its fan cable ending in a 4-hole female connector MUST be plugged into the mobo's CPU_FAN header. That is the ONLY header on your mobo that actually uses PWM Mode and thus provides the PWM signal on its Pin #4. That signal is REQUIRED by the Hub to do any control.

When you do this, that requires connecting the rest in a particular way. The actual CPU cooler MUST then be plugged into the specially-marked Port #1 of the Hub, because that is the only Hub port that can send back to the CPU_FAN header the speed of the fan on it. And that speed signal NEEDS to be the real CPU cooling fan. Then your case fans all will need to plug into other Hub ports. Note that the speeds of ALL of those case fans will NOT be reported anywhere - the Hub can only report back to the mobo the speed of ONE fan.

You have not told us the fans you have for case ventilation. For the Hub to be able to actually control their speeds, they MUST be 4-pin fans. Any 3-pin fan connected to a 4-pin port that uses PWM Mode will always run full speed. So, IF your case vent fans are 3-pin, the Hub is useless to you for control purposes. If that's your situation and you still want control of their speeds, post back here the maker and model number of those case fans, and how many you have. We can provide further advice for that situation.

 

[Paperdoc]

Thanks for Best Solution. I hope things are working now the way you want.