Cooler Master Silent Pro M1000 1000W

Cooling and Noise Level

Unfortunately the noise is one of our main points of criticism. The fan spins relatively fast, even at 50% load. In our opinion an additional regulating stage is missing, which falls short of 20dBA at 20% load. But the spin-up is moderate up to 80% load. Then the fan spins at nearly full speed and a noise level of 30dBA can be measured, climbing up to 35dBA at light overload, which is very loud.

On one hand the Silent Pro doesn't live up to its name. On the other hand FSP always has used rather conservative regulation of cooling to prevent overheating. When the customer is playing games or listening to music, he usually will not be able to discern a difference in noise, as the PSU will be drowned out by the noise of the latest high-end graphics cards. It is more annoying that the results in idle won't be better at all.

The Power Logic fan with the model number PLA14025S12H is a sleeve bearing type. It's a 135mm sized fan, with half of the cooling intake is blocked by an air guidance foil. Cooler Master tries to guide the down flowing air stream out through the ventilation holes, so no turbulence from additional down streaming air should occur near the EMI-filtering components. This sounds plausible in theory, but practically it is a massive restriction of the cooling potential of the fan. When such a large area is covered, it should be in question why such large fan is used at all. Cooler Master should cover the first third at most and use a better fan, which would be more suitable to the general quality of the electronics. But there are even louder PSUs in this class. It should be clear that especially here significantly more cooling power is required.