im using three SilverStone Technology Silverstone 8-Port PWM Fan Hub/Splitter
for 4-Pin & 3-Pin Fans in Black SST-CPF04-USA (Newest Version) to run all six of my Noctua NF-A14 iPPC-3000 PWM fans an in the b450m bios at full speed they top out at 2850rpm powered by my evga supernova g3 650watt...