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Tuniq Potency 550W Review

paulktreg    -   August 24, 2008
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Testing(Continued):

Temperature, Noise Levels and Fan Speeds

 

DC Loading
Temp In (°C)
Temp Out (°C)
Δ Temp (°C)
Fan Speed (RPM)
0
22.7
22.7
0
696
113W
22.3
27.5
5.2
712
286W
20.7
28.5
7.8
1526
400W
22.1
33.0
10.9
1700
547W
22.2
43.4
21.2
1702

 

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. One thing I will say about this power supply is the quoted operating ambient temperature for this unit is set at a very realistic 40 to 60 degrees Celsius. A common problem with low quality power supplies is their quoted operating temperature at a very low 20 to 25 degrees Celsius. This is misleading, and some people, looking at this figure, will no doubt think "Excellent!" and rush out and buy one. The problems start when it is installed and the operating temperature rises to 50 degrees Celsius, and the maximum available output power drops by as much as 50%.

One point I should perhaps mention is the inclusion of a clear plastic baffle just behind the large 120mm fan. This should ensure that most of the airflow from the fan is forced to the back of the power supply, over the printed circuit board, and out of the rear exhaust grill. The inclusion of this baffle must increase the cooling performance, and I will perhaps look into testing a power supply with one fitted to see what the difference is with and without.

There are no quoted noise level figures in the literature for this unit. Noise levels from the fan did increase at approximately 300W, as the fan increased its speed from 700 RPM to 1500 RPM, but this is to be expected. The noise level from this unit was at no time loud, and compared favourably with other high-end power supplies on the market. Noise levels are, of course, my personal opinion, and what I may consider quiet could quiet easily be considered noisy by other people.




  1. Introduction & Closer Look
  2. Closer Look (The Power Supply)
  3. Specifications & Features
  4. Testing: Load Testing 110VAC, 230VAC
  5. Testing: Efficiency and Power Factor
  6. Testing: Temperature, Noise Levels, and Fan Speeds
  7. Conclusion
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