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Lian Li Silent Force 850W Review

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Temperature, Noise Levels and Fan Speeds:


I am not going to give a pass or fail in this section, as the ATX12V V2.2 does not really have any references on which to base a decision.

Temperatures are purely for information only, as there are too many variables involved when installed in a case, which, by the way, it wasn't. Ambient temperature, processor cooling efficiency and case cooling fans all play their part on the temperature of the air entering the power supply, and consequently the temperature of the air leaving it. No valid conclusions can be made from this test.





DC Loading
Temp In (°C)
Temp Out (°C)
Δ Temp (°C)
Fan Speed (RPM)


The Lian-Li Silent Force 850W lives up to its name and remains very quiet even when the 135mm fan runs at 1390 RPM. This maximum speed is not fast when compared with other power supplies in its class, but does appear to keep the power supply cool at all times. Perhaps the inclusion of the baffle, mentioned earlier, does improve air flow and cooling.

The "Fan Delay-Off Function" that I talked about earlier does indeed work. The power supply ran for approximately 3 hours at maximum load, and at shut down (using the motherboard on/off signal via the green cable), the fan continued to run at 740 RPM for approximately 2 minutes. Cooling down the power supply at PC shutdown like this will, I'm sure, prolong the life of the power supply, but not by any significant amount I'm sure.


  1. Introduction & Closer Look
  2. Closer Look (The Power Supply)
  3. Specification & Features
  4. Testing: DC Voltage Load Regulation At 110VAC & 230VAC
  5. Testing: Efficiency, Power Factor & DC Quality
  6. Testing: Temperature, Noise Level & Fan Speed
  7. Conclusion
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