Well, the new fan has better heat dissipation efficiency, and it is normal for the speed to be lower. Besides, your CPU temperature is only 46 degrees, which is really not high for the old AMD 520! ! !
Master Lu is sometimes not very accurate. I have encountered situations where Master Lu detected that the power consumption of the GTX650 graphics card was only 5W, haha
If other software detects that the power consumption reaches more than 2,000 rpm, Then it'll be fine.