I wanted an 80mm fan for a PC that will be running 24/7. I chose this one because I have had very good experiences with Arctic products. It is a very good fan, it also has PST so you can connect one on top of the other. It is quiet and efficient

Decent 80mm fans, they do their job satisfactorily and are also PWM. When they increase their speed, they are audible, but in normal operation, they are slightly audible.

Τοποθετήθηκαν 4 σε παλιο κουτί ( Asus Vento 8) και βελτίωσαν το air flow σε μεγάλο βαθμό. Εννοείται σε σύγχρονα κουτιά προτιμάμε ανεμιστήρες με μεγαλύτερη διάμετρο που έτσι κι αλλιώς δεν έχουν θέση για 8αρηδες πλέον.

I bought 4 for my case and I can say they are amazing! The connection is a 4-pin, the same as the CPU fan, but the good thing about them is that firstly, they can also fit in a 3-pin motherboard, and secondly, they have the same port that the CPU fan uses, so I connected all 5 (4 Arctic + 1 CPU) to the same power supply port for fans on the motherboard (the user manual says that the maximum in one port is 5 fans). They are also quite silent for their speed (mine showed 2200-2300rpm in the BIOS). I can say I am quite satisfied.