Good so long as you dont use AMD
by Freddiethese fans are amazing, the airflow is great and the RGB is some of the best I've ever seen however if you use AMD Adrenaline to monitor your pc while in-game or to overclock you will find the L-connect 3 software will cause stutters and fps drops repeatedly while open in the background (which it has to be to control fan RPM) if you have an Nvidia card or just use MSI afterburner these fans and the software work a dream.