Thanks for joining the processor community.
I understand the stock processor fan is always spinning at idle rpm and you would like to control speed of the fan.
I see the stock processor fan is working as it should; it keeps the processor cool enough to work under specifications.
If you would like to increase fan rpm's, it as to be through motherboard BIOS, there should be have some settings to control the fan speed, however, this type of settings are available only if your motherboard BIOS provides such options.
Please bear in mind the stock processor fan comes with 3 or 4 wire fan connectors that allow the board to control fan speed.
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Well, like i said, i want to know what is the max RPM speeds of the cooler, the max i achieved via an ASUS software was 2500 RPM but im pretty sure that when i start my computer and the fan kicks in it starts really fast and loud and so far i cant reach that speeds with the ASUS software.