The C7 is more like 15-17% better than the Wraith Stealth .
I have used those coolers and the Cryorig C7 works as good as the Wraith Spire.
The Cryorig C7 gets a lot louder than the Wraith spire. Even at idle I can clearly hear the whine on the C7...kind of annoying. They should work on the fan blades.