Replaced Wraith Stealth with this. Wraith Stealth had a high-pitched sound while this one has a low-pitched one. The CPU temp with this one is around 5 C lower than with Wraith Stealth so it's a lot better. Had to redo my fan curve as Wraith Spire has a higher max RPM and it gets loud when it goes past 2100 RPM. But it keeps my CPU at around 36C at 2000 RPM.