Nice Case, looks fantastic.
Large fans, low fan speed, not much noise.
When you are gaming and the fans are up, you wont hear them due to all the explosions or the loud motor noise of simulation racing. When video encoding, just blast the WOPL, no fan noise.
The fans I have in my Pc are 14 blade aerocool sharks, they are 8 years old and some bearing noise is evident, due for replacement. The dynamic fluid bearings have done well in those.
The mini PC I use for most tasks is dead silent, no fans, but I put a small 12cm fan next to it anyway. That also cools the 300 watt pure sine wave inverter, not that either gets hot, the biggest killer of electronics is heat. Cooler running = longer life. Thats why the majority of my gear lasts beyond its life expectancy.
Lack of air flow is the reason the Antec Signature 650 psu failed, as the fan curve set by the manufacturer was too low. They preferred quiet performance over life of the components.
The Corsair Rm850x is fanless up to a certain wattage that I just dont reach. I have fitted a low speed fan to the intake under the PC so it always has air flow. Only downside is you have to clean the fan/psu once every 1-2 years.