be quiet! Pure Power 11 FM 850W Power Supply Review
Mike Sanders / 2 years ago
Ripple
Although not specifically pushed as a key feature of the be quiet! Pure Power 11 FM, the ripple results this 850W model provided in our testing were exceptionally strong. As can be seen below, a key highlight of this was the 5V and 3.3V rails which, at least according to my best memory, provided some of the lowest scores we have ever encountered. – No, single-digit scores in this remit are not unusual. Considering that the highest achieved for these specific rails was just 3.6, however, this is amazingly low (the visual representation of this in the charts is just mind-boggling! – It’s practically a flatline!).
While the 12V rail was a little bit more excitable, however, the results are still very impressive and hugely below the maximum allowed under EU standards (50).
| Load (%) | 3.3V Ripple | 5V Ripple | 12V Ripple |
| 20 | 2.6 | 2.8 | 18 |
| 40 | 2.8 | 3 | 12 |
| 60 | 2.8 | 3.2 | 12.8 |
| 80 | 3.2 | 3.2 | 14 |
| 100 | 3.6 | 3.2 | 17.2 |
