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Tuniq Ensemble 1200W Review

paulktreg    -   June 30, 2008
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Testing(Continued):

Temperature, Noise Levels and Fan Speeds

 

DC Loading(W)
Temp In (°C)
Temp Out (°C)
Δ Temp (°C)
In Fan (RPM)
Out Fan (RPM)
173
20
24
4
859
960
463
21
29
8
856
1627
637
21
31
10
844/1229
1631
770
21
34
13
1217
2540
1138
20
44
24
1206
2536

 

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.

Tuniq has paid particular attention to cooling on the Ensemble with some useful features. You will notice from the table above that both the large intake and smaller extraction fans are sensor controlled. There are two graphs on the outer packaging (repeated in the manual) illustrating fan speed against load. I haven't included these graphs but in brief, there are three possible speeds for each fan set by power supply loading. Below 300W speeds of 1000RPM for the 80mm and 850RPM for the 140mm fan, from 301W to 650W we have 1750RPM and 1200RPM and at 651W or above the fans spin at 2250RPM and 1400RPM. In the table above, the 140mm intake fan oscillated between 884RPM and 1229RPM at 637W as the unit heated up and cooled down, which will be the 651W changeover point for this particular unit. I at no time monitored the large 140mm fan running at its maximum quoted 1400RPM, the maximum being 1229RPM, but the small 80mm fan actually exceeded its quoted maximum of 2250RPM by running at 2540RPM.

One last thing I should mention about the fans is the Fan Delay Off Feature incorporated in the Ensemble. An internal temperature sensor inside the unit will keep the fans running until the internal temperature falls below 50 degrees C, even when you switch your PC off. I attempted to test this feature by warming up the Ensemble at 1138W for several minutes and signaling the power supply to switch off. Fans stopped. Warm up for one hour. Fans stopped. I suspect this feature, while seemingly useful, will hardly ever actually be called upon. It would be interesting to test this feature with the Ensemble installed in a very high end overclocked quad core/quad SLI system with poor case cooling, but who would do that? Even then, it may not be necessary as I believe the cooling on the Ensemble may never allow the internal temperature to get that high.

The maximum quoted noise level for this unit is 29dbA, which in my opinion is quiet. Noise levels from the fans did increase at 770W, but this is to be expected. The noise level from this unit, once installed in a case, will in my opinion be minimal, especially at what I would consider average PC loading of between 400 and 600W.




  1. Introduction and Closer Look
  2. Closer Look (The Power Supply)
  3. Specifications and Features
  4. Testing
  5. Testing (Continued)
  6. Testing (Continued)
  7. Conclusion
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