Kolink Continuum 1200W Platinum Power Supply Review




/ 8 years ago

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Ripple


Noise and Ripple can easily be measured by an oscilloscope. These show how much voltage fluctuation there is on a particular rail. We tested the rail stability of the 3.3 volt, 5 volt and 12 volt rails using an identical time and millivolt scale for all graphs. millivolt ripple is measured by the peak to peak size of the voltage curve.

sample_scalev2

Sample Ripple Graph

The latest ATX 12 volt version 2.3 specifications state that ripple from peak to peak must be no higher than 50 millivolts for the 3.3 volt and 5 volt rails, while the 12 volt rail is allowed up to 120 millivolts peak to peak to stay within specifications. Millivolt figures are stated to the closest increment of 5 given their variability.

 Load (%)   3.3V Ripple   5V Ripple   12V Ripple 
 20  4.5  8.7  23.8
 40  5.6  11.2  33.6
 60  6.4  13.6  45.8
 80  8.4  16.6  55.4
 100  10.8  20.8  69

Ripple on the 3.3v and 5v rails is nice and low throughout, even at full load. The 12V rail has a little more ripple to it, more so than we would normally see on a high-end unit, but given the ATX spec allow for up to 120mv and it maxed out at 69, it’s hardly bad, but something we would like to see improved in the future.

3.3 volt @ 100%

be quiet 3j

5 volt @ 100%

be quiet 5j

12 volt @ 100%

be quiet 12j

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