I did well to wait a while before giving my opinion on this. I was very satisfied upon installation, silent at will, as my previous alim (another brand) but with high quality and more (what I thought).
And now, since yesterday my computer was heard throughout the house! The cause? The power! the fan makes a noise worthy of a fan of 15 years old! My computer was always silent, this is the first time he made such a racket! Corsair thank you!