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 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 | 4.2 | 3.8 | 8.6 |
| 40 | 5.8 | 6 | 11.2 |
| 60 | 11.6 | 9 | 14.6 |
| 80 | 11.6 | 8 | 19.4 |
| 100 | 15.6 | 7.8 | 28.2 |
Very good ripple suppression here and a positive sign that Silverstone has invested in good quality components and shielding.
3.3 volt @ 100%
5 volt @ 100%
12 volt @ 100%
Kick some grass in Plant vs. Zombies Battle for Neighborville , the wackiest shooter yet!…
NEW compact multi-platform USB-C dongle for low latency 2.4Ghz wireless adds the flexibility to swap…
The AOC 25G3ZM/BK meets the needs of both e-sports games and competitive players and casual…
This Logitech G Designed in collaboration with the world's best professional gamers, eSports gaming mouse…
Gaming enthusiasts can now relive their favorite PlayStation classics on their iPhones, thanks to the…
A World Transformed by Disorder – In 2042, extreme weather events and resource conflicts have…