Corsair – 4000d Airflow 2025 Review. Available with or without rgb lighting elements, it. This review is the 4000d airflow black version with 2 120mm airguide fans with anti vortex fins:
The be quiet 500dx is slightly better build quality and has 3x140mm. With the launch of the af120 elite rgb fans, corsair took the opportunity to relaunch the 5000d and 4000d cases as icue editions featuring the new cooling units.