The 120mm fan is not a cpu fan.
The product homepage explicitly states it can be used as "replacement of CPU cooler PWM fan."
Besides, what difference shall it make, it is a PWM fan, just like the Intel stock one.
The electrical specifications seem to be in range, the motherboard technical specification states:
Table 28. Fan Header Current Capability
Fan Header Maximum Available Current
Processor fan 2.0 A
Front chassis fan 1.5 A
Rear chassis fan 1.5 AThe Intel stock cooler is marked as 0.17AThe 120mm fan affected by the problem is marked as 0.12AThe other 80mm CoolerMaster NOT affected by the problem is also 0.12A
I see your point. If the fan is use as a cpu fan together with the cooler master heatsink it behave as described in your thread. However, if used as a case fan, in your test - rear fan, it function properly.
Is this right?
Message was edited by: Boyet