Question about Corsair H100i v2

yes, of course. Any 120mm fan should fit. When buying fans, however, make sure that you buy fans with high static pressure. On a radiator or cooler, the pressure is decisive, not the air volume (cubic metres).

Corsair ML120 Pro, very strong and adjustable. Noiseblocker Multiframe S-Series M12-3 is weaker but also quieter. Otherwise, you can also look for Static Pressure at Digitec under Ventilation + Cooling, PC Fans on the left.

Greetings Chris

Which one can you recommend? As quiet as possible :) and easy to install.