These fans when at full throttle push a lot of air but are quite loud in this mode, I was under the impression that they would slow down when idle but that doesn't seem to be the case for me.

However the adaptors that they come to cap the RPM's at 1200 or 1600 work wonders, using even the 1600 cord makes a dramatic difference in volume why still pushing plenty of air.

Overall construction is of a very good quality from what I can tell.

The cords aren't too long (without the adaptors , though they were fine for my case and MB) but if you have a larger case you may need some extensions.

Very good fan, delivers lots of air, but sadly to big to be an intake for my case so it grinds on my front panel :( but it works anywhere else!

Nice quiet fan and keeps case nice and cool but when it goes higher in RPM's it gets very loud. I also like that you can set a custom fan curve in fan controlling software if you have a 4 Pin fan header on your MB.