Lian Li PC-O11 XL & MetallicGear Neo Qube
I'm using both

PC-O11 XL for my gaming PC with 7 x 120MM fans. 3 intake + 4 exhaust
Neo Qube for my home server with 6 x 120MM fans. 3 intake & 3 exhaust

The gaming PC runs 6 - 12 hours per day depending on the day. Sits on a desk
Home sever runs 24-7 for a whole year. Sits on the floor

Neither of these systems has much dust build-up. Just last week I open the Neo Qube to replace some liquid cooling parts, barely any dust inside, even the fans have very little dust. Fans in the home server run at a fixed speed of 1300RPM

Both casings come with filters all around the case but I only use dust filter on the intake. Removed dust filter on exhaust because it's unnecessary

This post has been edited by sHawTY: Jan 4 2021, 12:16 PM

Never. Except when I want to change or upgrade something inside the PC
The home server has been running for 18 months before I decided to upgrade the liquid cooling loop

Barely any dust inside