Corsair Obsidian 550D @ techPowerUp
 

With every major case manufacturer trying to offer a silent case option, it was just a matter of time before Corsair did the same. Somewhat late to the party, the Obsidian 550D costs a bit more than the competition, but manages to offer an extremely well rounded package giving the user the flexibility between silence and viable compromise for performance.

http://www.techpowerup.com/reviews/C...Obsidian_550D/