Ripple & Noise

Ripple & Noise +3.3V
Load mV
10% 6.2
20% 8.1
50% 9.2
80% 10.4
100% 13.3
110% 13.6

 

Ripple & Noise +5V
Load mV
10% 10.5
20% 12.2
50% 13.3
80% 16.2
100% 21.6
110% 22.5

 

Ripple & Noise +12V
Load mV
10% 11.8
20% 11.8
50% 16.1
80% 18.2
100% 29.6
110% 83.0

The presence of capacity mostly makes itself noticeable in the ripple results. +3.3V starts with a vanishingly low peak-peak value of just 6mV at 10% load, and later it increases to 14mV. +5 V begins with a higher result, but finishes with 23mV at overload, which is well within specification (50mV). On the +12V rail more capacitors are available for voltage straightening, but the currents are significantly higher. Here we have shown the worst case with a larger spike at 110% load at one of the measuring points. But this is still within specification and very decent, as it does not even reach 50% of the allowed level.

Cooling and Noise Level Conclusion
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  • Imagginer - Thursday, September 9, 2010 - link

    No worries... Even when I say I don't need it, I still don't mind reading about it :)
  • cactusdog - Tuesday, September 7, 2010 - link

    My 5870 is silent when idling, most of them are these days so 2X silent is still silent.
    Fan noise is annoying to me(and others) i spend carefully to avoid noise and i have a silent highend gaming rig. If the manufacturer claims the PSU to be silent it needs to silent.

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