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Home > Hardware Reviews > PC Parts

Tuesday, February 24, 2009
Tuniq Potency 750W PSU

3. Basic tests

Testing the efficiency of a PSU is not very easy and it requires use of specialized hardware. The goal would be to see whether the PSU delivers efficient current to simultaneously power all the devices that are connected to the PSUs power lines.

For this review, we have just tried to load our test PC with many devices and created extensive CPU+3D workload by using 3D Mark Vantage and PC Mark Vantage. Our test PC was as follows:

  • Motherboard: Asus P6T Deluxe/OC Palm Edition
  • CPU: Intel Core i7-920 retail
  • 2x Asus EN9800GTX
  • 3x1GB Crucial PC3-10600
  • 1xWD 80JB SATA I
  • 1xSeagate 80GB SATAII
  • Windows VISTA 32bit SP1

All PSU ratings were monitored with Everest Ultimate Edition v3.0. The following table lists the industry wide specifications for DC Output Voltage.

 

While we were running both benchmarks, we were monitoring the voltage of the basic power outputs of teh PSU, in an effort to see how much stress the PSU had taken. A summary of the results are available below:

Minimum
Maximum
+3.3 V
V
3,23
3,26
+5 V
V
4,88
4,93
+12 V
V
12,20
12,27

The results are adequate and they stay within the standard range. The dual VGA setup seems to strech the power supply a little bit resulting to a slight (0.07V) variation of the voltage of the +12V rail.




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