I run the bios fan control and have tried in both situations to run optimize All or whatever it is. Motherboard is x670e-e gaming. Fans are:
https://www.amazon.com/dp/B0BXSJYFMJ?ref=ppx_yo2ov_dt_b_product_details&th=1
Here's the deal. If I run optimize for PWM mode I can get it down to 36%? That's about 3k RPM. Before running optimize i could set it to 0% and would spin at 3k RPM, not stop
If I run optimize for DC mode I can get it down to maybe 9%? and is running super slow like 800RPM? Maybe less? Set it to lower or 0 it stops spinning.
Lots of articles say you should run your fans in PWM mode if they are 4 pin but not sure I want my fans running 3k RPM if they don't need to. Not super loud but I will have 8 of these. Noise aside, curious what's happening here. In my mind DC mode is what I would technically want as I have full control of the fan speed lows and highs. So anyone know why this is happening and what I should do?
Also because of the number of fans and wattage will need to run these off a fan hub with a SATA power connector and a 4 pin cable from the hub to one of the MB fan headers. Will that work in DC or PWM mode or automatically work in one or the other being a hub vs each fan directly connected to the MB?
