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Thermaltake Toughpower Grand 750W Power Supply Review

paulktreg    -   October 14, 2010
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Testing:

Efficiency and Power Factor:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The Thermaltake Toughpower Grand 750W didn't quite meet the requirements of its claimed 80 Plus Gold certification following the OCC power supply testing methodology. The test protocols for 80 Plus are very rigid and because of some limitations in my test kit I can't maintain the mains input voltage at exactly 115VAC or load the rails to the precise levels required by the 80 Plus test specification but the results are as good, and in some cases better, than other power supplies I have tested in this class.

 

 

The results with a 230VAC mains supply show a slight improvement over the 110VAC results but this is usually the case. The results overall are still impressive with a maximum efficiency of 90% and power factor levels over 0.9 at 20% DC loading and above at all times.

 

AC Ripple On DC Outputs:

 

I have consistently found the AC ripple levels on the DC rails to be more or less equal with a 110VAC or 230VAC mains supply. The results given below are for 230VAC only but I will continue to check the levels at 110VAC during testing and publish them below if there are any significant differences.

 

AC ripple/noise on the +3V3 rail at 230VAC

Oscilloscope settings: Amplitude = 10mv/div, Timebase = 5uS/div

 

AC ripple/noise on the +5V0 rail at 230VAC

Oscilloscope settings: Amplitude = 10mv/div, Timebase = 5uS/div

 

AC ripple/noise on the +12V rail at 230VAC

Oscilloscope settings: Amplitude = 10mv/div, Timebase = 5uS/div

 

AC ripple/noise on the -12V rail at 230VAC

Oscilloscope settings: Amplitude = 10mv/div, Timebase = 5uS/div

 

AC ripple/noise on the +5VSB rail at 230VAC

Oscilloscope settings: Amplitude = 10mv/div, Timebase = 5uS/div

 

Thermaltake Toughpower Grand 750W (TPG-750MCUS) AC Ripple/Noise
Supply = 230VAC/50Hz DC Loading = 784W
DC Rail
+3V3
+5V0
+12V
-12V0
+5VSB
ATX12 Max (mV p-p)
50
50
120
120
50
Ripple (mV p-p)
45
50
40
70
35
Pass/Fail
Pass
Pass
Pass
Pass
Pass

The Thermaltake Toughpower Grand 750W produced noise levels that were at times borderline and a little higher than I would like to see in a power supply of this pedigree, with the levels on the 3V3 and 5V0 rail almost breaching the ATX12V V2.2 maximum allowable level of 50mV. The 12V rail performed a little better with only 40mV, well below the maximum allowable of 120mV but still higher than some power supplies in this class. Noisier than other power supplies in its class but just low enough to meet the ATX12V V2.2 specification.




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