be quiet! System Power 10 750W Review - A Big Step Backwards

Name: be quiet! System Power 10 750W
Brand: Be Quiet!
Price: 75 USD

crmaris

on Dec 16th, 2022,

in Power Supplies.

Manufacturer: Be Quiet!

Efficiency »

Test Setup

Primary Rails Load Regulation

The following charts show the voltage values of the main rails, recorded over a range from 60 W to the maximum specified load, and the deviation (in percent) for the same load range. Tight load regulation is essential for every power supply because it allows for consistent voltage levels, despite changes in load.

5VSB Regulation

Load regulation is loose on all rails.

Ripple Measurements

Ripple represents the AC fluctuations (periodic) and noise (random) found in the DC rails of PSUs. Ripple significantly decreases the life span of capacitors because it increases their temperature; a 10°C increase can cut into a capacitor's life span by up to 50 percent. Ripple also plays a vital role in overall system stability, especially if the system is overclocked. According to the ATX specification, the ripple limits are 120 mV (+12V) and 50 mV (+5V, +3.3V, and 5VSB).

Ripple Measurements - be quiet! System Power 10 750W
Test	12V	5V	3.3V	5VSB	Pass/Fail
10% Load	37.7 mV	21.7 mV	14.1 mV	28.0 mV	Pass
20% Load	36.4 mV	20.9 mV	15.0 mV	24.0 mV	Pass
30% Load	38.7 mV	24.5 mV	16.4 mV	21.3 mV	Pass
40% Load	44.8 mV	21.4 mV	16.7 mV	20.4 mV	Pass
50% Load	50.7 mV	23.6 mV	18.4 mV	22.6 mV	Pass
60% Load	56.2 mV	26.9 mV	19.1 mV	25.0 mV	Pass
70% Load	60.7 mV	29.8 mV	20.7 mV	32.7 mV	Pass
80% Load	61.0 mV	32.5 mV	23.9 mV	35.9 mV	Pass
90% Load	71.7 mV	33.3 mV	26.3 mV	33.5 mV	Pass
100% Load	105.4 mV	39.6 mV	36.2 mV	49.7 mV	Pass
110% Load	124.0 mV	43.4 mV	37.9 mV	52.4 mV	Fail
Crossload 1	45.1 mV	32.6 mV	28.3 mV	23.6 mV	Pass
Crossload 2	41.0 mV	26.0 mV	15.3 mV	22.8 mV	Pass
Crossload 3	40.7 mV	26.7 mV	20.7 mV	26.4 mV	Pass
Crossload 4	106.1 mV	33.9 mV	32.5 mV	31.7 mV	Pass