Thermaltake Toughpower SFX 750W Gold PSU Review

Load Regulation

Test 12V 5V 3.3V 5VSB DC/AC (Watts) Efficiency Fan Speed (RPM) PSU Noise (dB[A]) Temps (In/Out) PF/AC Volts
10% 4.385A 1.968A 1.975A 0.982A 75.001 86.517% 1442 26.4 39.42°C 0.962
12.178V 5.082V 3.343V 5.093V 86.689 43.51°C 115.14V
20% 9.789A 2.957A 2.967A 1.181A 149.965 89.85% 2136 39.3 40.63°C 0.98
12.162V 5.075V 3.336V 5.081V 166.906 44.99°C 115.12V
30% 15.547A 3.454A 3.468A 1.381A 224.972 91.027% 2311 40.3 41.71°C 0.982
12.150V 5.068V 3.331V 5.069V 247.147 46.46°C 115.09V
40% 21.335A 3.953A 3.97A 1.582A 300.062 91.396% 2237 38.8 41.7°C 0.984
12.133V 5.061V 3.325V 5.057V 328.309 46.77°C 115.07V
50% 26.744A 4.949A 4.973A 1.785A 374.594 91.244% 2400 42 42.36°C 0.987
12.118V 5.053V 3.318V 5.045V 410.545 47.88°C 115.05V
60% 32.196A 5.948A 5.98A 1.988A 449.512 90.901% 2496 42 43°C 0.99
12.103V 5.045V 3.312V 5.031V 494.508 49.11°C 115.04V
70% 37.663A 6.951A 6.991A 2.192A 524.441 90.415% 2592 43.2 43.1°C 0.992
12.089V 5.037V 3.305V 5.018V 580.045 50.16°C 115.01V
80% 43.212A 7.957A 8.004A 2.297A 599.656 89.839% 2702 44 43.59°C 0.993
12.074V 5.029V 3.298V 5.008V 667.478 51.64°C 114.99V
90% 49.107A 8.465A 8.505A 2.402A 674.681 89.207% 2814 45.4 44.56°C 0.994
12.059V 5.021V 3.291V 4.997V 756.317 53.59°C 114.97V
100% 54.808A 8.977A 9.04A 3.019A 749.912 88.34% 2988 46.7 45.8°C 0.995
12.046V 5.013V 3.285V 4.97V 848.897 55.89°C 114.96V
110% 60.394A 9.993A 10.16A 3.024A 824.942 87.449% 3008 47.2 46.54°C 0.996
12.032V 5.004V 3.277V 4.961V 943.338 57.44°C 114.94V
CL1 0.115A 11.868A 11.929A 0A 101.297 85.064% 2421 42.2 44.02°C 0.975
12.195V 5.072V 3.327V 5.105V 119.077 49.51°C 115.13V
CL2 0.115A 19.701A 0A 0A 101.391 83.944% 2306 40.3 41.42°C 0.974
12.187V 5.076V 3.328V 5.117V 120.788 48.52°C 115.13V
CL4 62.282A 0A 0A 0A 749.706 89.209% 2631 44.3 47.63°C 0.995
12.037V 5.024V 3.3V 5.078V 840.393 58.58°C 114.96V

Load regulation is loose on all rails. In addition, I couldn’t run the CL3 test, where I applied a full load at 3.3V and a minimum load on all other rails. The same problem occurred in the 850W unit.

Ripple Suppression

Test 12V 5V 3.3V 5VSB Pass/Fail
10% Load 15.0 mV 6.1 mV 5.2 mV 12.0 mV Pass
20% Load 11.6 mV 7.6 mV 5.1 mV 12.9 mV Pass
30% Load 10.3 mV 11.5 mV 5.8 mV 14.9 mV Pass
40% Load 11.5 mV 12.0 mV 6.2 mV 15.8 mV Pass
50% Load 10.8 mV 11.6 mV 5.8 mV 16.1 mV Pass
60% Load 10.3 mV 12.6 mV 6.0 mV 19.0 mV Pass
70% Load 10.1 mV 18.0 mV 6.6 mV 20.1 mV Pass
80% Load 10.8 mV 17.9 mV 7.3 mV 20.1 mV Pass
90% Load 11.8 mV 15.9 mV 8.0 mV 20.9 mV Pass
100% Load 17.3 mV 11.2 mV 7.4 mV 28.7 mV Pass
110% Load 19.3 mV 11.6 mV 8.0 mV 28.9 mV Pass
Crossload 1 17.2 mV 8.9 mV 9.8 mV 7.2 mV Pass
Crossload 2 12.4 mV 10.1 mV 8.2 mV 6.8 mV Pass
Crossload 4 18.3 mV 8.9 mV 5.7 mV 11.8 mV Pass

Ripple suppression is good.

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