Welcome Stranger to OCC!Login | Register

Tuniq Ensemble 1200W Review

paulktreg    -   June 30, 2008
» Discuss this article (3)

Testing (Continued):

Efficiency and Power Factor

I was not too dissapointed with the failure of the Ensemble to meet the claim of Super High Efficiency (87%). The stated typical efficiency of 80% is nearer the mark at low and medium loads with high loads producing around 70% efficiency. I have, however, passed this power supply. It didn't meet its claimed efficiency or the ATX12V recommended minimum efficiency but it did meet the required minimum efficiency at all loadings. 

 

 

 

 

 

 

Output And Efficiency

DC Load (W)
AC Load (VA)
AC Load (W)
PF
Efficiency (%)
Pass/Fail
173
256
216
0.84
80
Pass
463
621
574
0.92
81
Pass
637
872
825
0.94
77
Pass
770
1077
1060
0.95
72
Pass
1138
1643
1598
0.97
71
Pass

 

AC Ripple on DC Outputs

The noise levels at the AC mains frequency of 50Hz and after rectification at 100Hz are well within acceptable levels. The maximum noise level occurred at the switching frequency of the power supply, which is approximately 62.5kHz. Lets have a look....

 

 

Above: Screenshots of AC Noise on 3V3 and 5V0 rails.

 

 

 

Above: Screenshots of AC Noise on 12V1 and 12V2 rails.

 

 

 

Above: Screenshots of AC Noise on 12V3 and 12V4 rails.

 

 

 

Above: Screenshots of AC Noise on -12V and 5VSB rails.

 

Tuniq Ensemble 1200W AC Ripple/Noise Measurements

DC Output

+3V3
+5V0
+12V1
+12V2
+12V3
+12V4
-12V0
+5VSB

Ripple (mV )

48
45
35
43
28
24
70
60
Pass/Fail
Pass
Pass
Pass
Pass
Pass
Pass
Pass
Fail

 

In an ideal world, what I would really like to see is zero noise but in reality, this is never going to happen on any ATX power supply. I measured the peak to peak AC signal, in millivolts, to see how each rail compared against the ATX12V standard. The above table records the maximum AC noise amplitude results during my 1138W load test. The six main voltage rails fall inside the ATX12V specification, with a minor hiccup on the +5VSB rail (60mV against the standard maximum of 50mV).

With the exception of the 5VSB rail, not a bad result!




  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
Random Pic
© 2001-2014 Overclockers Club ® Privacy Policy

Also part of our network: TalkAndroid, Android Forum, iPhone Informer, Neoseeker, and Used Audio Classifieds

Elapsed: 0.0365669727