Super Flower Leadex III 650 W Review 15

Super Flower Leadex III 650 W Review

Cross Load Tests »

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 important for every power supply because it allows for consistent voltage levels despite of changes in load.






5VSB Regulation



Hold-up Time

Hold-up time represents the amount of time, usually measured in milliseconds, a PSU can maintain output regulations as defined by the ATX specification without input power. Put simply, hold-up time is the amount of time the system can continue to run without shutting down or rebooting during a power interruption. In the following screenshots, the blue line is the mains signal and the green line the "Power Good" signal, while the yellow line represents the +12V rail.







Inrush Current

Inrush current, or switch-on surge, refers to the maximum instantaneous input current drawn by an electrical device when it is first turned on. Large enough inrush current can cause the tripping of circuit breakers and fuses, and may also damage switches, relays, and bridge rectifiers. As a result, the lower the inrush current of a PSU right as it is turned on, the better.


10-110% Load Testing

These tests reveal the PSU's load regulation and efficiency levels under high ambient temperatures. They also show how the fan-speed profile behaves under tough operating conditions.

Load Regulation Efficiency Testing Data Super Flower SF-650F14HG
Test12 V5 V3.3 V5VSBPower
(DC/AC)
EfficiencyFan SpeedPSU NoiseTemp
(In/Out)
PF/AC
Volts
10% Load3.566A1.990A1.994A0.983A64.920W86.254%0 RPM<6.0 dB(A)46.81°C0.660
12.147V5.027V3.309V5.087V75.266W40.20°C230.35V
20% Load8.115A2.987A2.992A1.183A129.413W90.370%0 RPM<6.0 dB(A)47.47°C0.842
12.139V5.024V3.307V5.075V143.204W40.53°C230.37V
30% Load13.067A3.487A3.479A1.383A194.522W91.712%0 RPM<6.0 dB(A)48.49°C0.913
12.131V5.021V3.304V5.064V212.102W41.01°C230.36V
40% Load18.034A3.987A3.999A1.584A259.779W92.201%0 RPM<6.0 dB(A)49.76°C0.939
12.120V5.017V3.301V5.052V281.752W41.22°C230.52V
50% Load22.672A4.988A5.002A1.786A325.061W92.189%0 RPM<6.0 dB(A)51.23°C0.954
12.110V5.013V3.298V5.040V352.601W42.05°C230.37V
60% Load27.250A5.990A6.008A1.990A389.590W91.926%0 RPM<6.0 dB(A)53.28°C0.964
12.102V5.010V3.295V5.027V423.806W42.56°C230.40V
70% Load31.888A6.993A7.015A2.194A454.922W91.446%0 RPM<6.0 dB(A)54.40°C0.971
12.099V5.007V3.292V5.015V497.477W43.30°C230.39V
80% Load36.515A7.993A8.020A2.399A520.243W91.076%623 RPM12.3 dB(A)43.75°C0.976
12.100V5.005V3.292V5.004V571.220W55.67°C230.41V
90% Load41.523A8.496A8.512A2.400A585.148W90.612%1020 RPM22.9 dB(A)44.73°C0.979
12.105V5.003V3.290V5.001V645.775W56.83°C230.39V
100% Load46.275A9.001A9.034A3.014A650.010W90.179%1245 RPM30.2 dB(A)45.53°C0.982
12.108V5.000V3.288V4.978V720.797W58.35°C230.82V
110% Load51.612A9.004A9.038A3.016A714.837W89.777%1570 RPM35.4 dB(A)46.70°C0.985
12.112V4.999V3.286V4.974V796.237W60.09°C230.39V
Crossload 10.147A12.001A12.002A0.000A101.549W84.953%0 RPM0 dB(A)51.50°C0.802
12.123V5.017V3.296V5.092V119.536W41.83°C230.39V
Crossload 254.118A1.003A1.001A1.000A668.466W90.683%1385 RPM31.6 dB(A)45.68°C0.983
12.105V5.006V3.294V5.050V737.147W58.65°C230.39V

Light Load Testing

In the following tests, we measure the PSU's efficiency at loads significantly lower than 10 percent of its maximum capacity (the lowest load the 80 PLUS standard measures). This is important for representing when a PC is idle with its power-saving features turned on.

Efficiency at Low Loads Super Flower SF-650F14HG
Test #12 V5 V3.3 V5 VSBPower
(DC/AC)
EfficiencyFan SpeedPSU NoisePF/AC
Volts
12.836A0.498A0.480A0.196A39.598W82.862%0 RPM<6.0 dB(A)0.519
12.165V5.031V3.313V5.115V47.788W230.34V
24.085A0.995A0.996A0.392A59.979W86.617%0 RPM<6.0 dB(A)0.638
12.160V5.029V3.312V5.107V69.246W230.35V
35.272A1.489A1.479A0.588A79.478W88.491%0 RPM<6.0 dB(A)0.714
12.158V5.028V3.310V5.100V89.815W230.35V
46.527A1.990A1.993A0.786A99.916W89.496%0 RPM<6.0 dB(A)0.780
12.152V5.027V3.309V5.092V111.643W230.35V

Efficiency

Using the results that we gathered so far, we plotted a chart showing the PSU's efficiency at low loads and loads from 10 to 110 percent of its maximum-rated capacity.


The Leadex III unit has satisfactory efficiency under light loads, but I wanted to see a little higher overall efficiency with normal loads.

5VSB Efficiency

5VSB Efficiency Super Flower SF-650F14HG
Test #5VSBPower (DC/AC)EfficiencyPF/AC Volts
10.100A0.513W70.564%0.017
5.122V0.727W230.36V
20.250A1.280W75.338%0.038
5.118V1.699W230.36V
30.550A2.811W77.716%0.080
5.110V3.617W230.36V
41.000A5.098W79.125%0.135
5.098V6.443W230.36V
51.500A7.625W80.128%0.187
5.083V9.516W230.36V
63.000A15.111W80.528%0.292
5.037V18.765W230.36V

The 5VSB rail is highly efficient.

Power Consumption in Idle and Standby

Idle / Standby Super Flower SF-650F14HG
Mode12 V5 V3.3 V5VSBPower (AC)PF/AC Volts
Idle12.186V5.037V3.317V5.125V5.187W0.110
230.4V
Standby0.083W0.002
230.4V

Fan RPM, Delta Temperature and Output Noise

The following results were obtained at 37 °C - 47 °C ambient.





The following results were obtained at 30–32 °C ambient.

Next Page »Cross Load Tests