Wraith Spire Noise at low RPM

When I am running my wraith spire at low RPM's, it is making a high pitch sound. When I turn up the RPM, at around 80-90%, the noise goes away. Have any others experienced this? Also, the reason why I am asking, is because I am stress testing my AMD Ryzen 1600, and the temperature readings are off between Ryzen Master (high reading, close to 78C degrees, with HWINFO telling me around 58C degrees) How can I know if I have the right readings? I have an Asrock b350m Pro4 motherboard with latest bios.