Cougar Vortex PWM Fans

[Cod]

Does anyone have any experience with these fans? I need to replace one of the stock fans in my Silverstone GD05 and came across these while browsing the interwebz. Since I need a 120mm case fan, I was looking at the CF-V12HP (http://www.cougar-world.com/products/fa ... x_pwm.html). The specifications / numbers "look" good and a lot of the customer reviews I've read made the fans look like a great product. I'm looking for thoughts from the SCPR viewers since we have an unnatural affection with silence to go with performance.

Any thoughts are greatly appreciated.

[lodestar]

According to the spec on the website, an idle of 20% duty cycle would equate to around 800 rpm which seems a bit on the high side.

[Lithium466]

Cougar Vortex PWM was reviewed here : http://www.hardware.fr/articles/867-10/ ... -test.html
(in french)

They lowered it's speed to 755 rpm in PWM mode, or 390 rpm @5V.