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Thermaltake ToughPower Grand RGB Gold (Sync Edition) 750W Power Supply Review

To learn more about our PSU tests and methodology, please check out How We Test Power Supply Units.

Primary Rails And 5VSB Load Regulation

Load Regulation testing is detailed here.

Hold-Up Time

Our hold-up time tests are described in detail here.

The oscilloscope screenshots that we took during the hold-up time measurements:

The hold-up is very close to 17ms, with the power ok signal needing 1.2ms to reach 16ms, which is what the ATX spec requires. At least it is accurate (the power ok signal).

Inrush Current

For details on our inrush current testing, please click here.

We measure high inrush current with both voltage inputs. What make us wonder here is the sky high inrush reading of the 650W model.

Load Regulation And Efficiency Measurements

The first set of tests reveals the stability of the voltage rails and the TPG-750AH3FSGR’s efficiency. The applied load equals (approximately) 10 to 110 percent of the power supplies maximum load in increments of 10 percentage points.

We conducted two additional tests.

During the first, we stressed the two minor rails (5V and 3.3V) with a high load, while the load at +12V was only 0.1A. This test reveals whether a power supply is compatible with Intel’s C6/C7 sleep states or not. In the second test, we determined the maximum load the +12V rail could handle with minimal load on the minor rails.

Test # 12V 5V 3.3V 5VSB DC/AC (Watts) Efficiency Fan Speed (RPM) PSU Noise (dB[A]) Temps (In/Out) PF/AC Volts
1 4.371A 1.982A 1.957A 0.999A 74.578 86.843% 0 <6.0 47.85°C 0.947
12.118V 5.051V 3.372V 5.005V 85.877 40.37°C 115.06V
2 9.798A 2.979A 2.950A 1.204A 149.460 90.367% 0 <6.0 48.87°C 0.977
12.099V 5.038V 3.357V 4.985V 165.393 40.83°C 115.06V
3 15.632A 3.484A 3.437A 1.411A 224.871 91.552% 580 9.5 41.04°C 0.990
12.082V 5.025V 3.344V 4.964V 245.620 49.49°C 115.04V
4 21.417A 3.988A 3.962A 1.619A 299.656 91.526% 575 9.5 41.46°C 0.994
12.068V 5.014V 3.331V 4.943V 327.399 50.57°C 115.04V
5 26.889A 5.001A 4.974A 1.829A 374.579 90.961% 575 9.5 42.17°C 0.994
12.052V 5.001V 3.317V 4.923V 411.802 51.90°C 115.04V
6 32.375A 6.017A 5.999A 2.041A 449.513 90.300% 820 19.3 42.81°C 0.995
12.037V 4.987V 3.301V 4.902V 497.802 52.95°C 115.04V
7 37.913A 7.038A 7.029A 2.254A 524.782 89.565% 1010 26.2 43.34°C 0.996
12.019V 4.974V 3.286V 4.881V 585.922 54.24°C 115.03V
8 43.458A 8.067A 8.072A 2.471A 600.128 88.721% 1140 29.9 43.52°C 0.996
12.005V 4.960V 3.270V 4.859V 676.425 55.15°C 115.03V
9 49.398A 8.591A 8.593A 2.475A 674.639 87.966% 1405 36.0 44.59°C 0.997
11.987V 4.949V 3.257V 4.849V 766.933 56.84°C 115.03V
10 55.142A 9.121A 9.157A 3.126A 749.882 86.975% 1400 36.0 45.69°C 0.997
11.972V 4.936V 3.243V 4.800V 862.178 58.70°C 115.03V
11 61.509A 9.140A 9.191A 3.135A 825.120 85.936% 1398 36.0 46.51°C 0.998
11.956V 4.925V 3.231V 4.787V 960.153 60.89°C 115.02V
CL1 0.144A 14.005A 13.998A 0.000A 118.102 82.258% 690 13.8 42.42°C 0.974
12.109V 5.002V 3.308V 5.065V 143.575 52.31°C 115.05V
CL2 62.516A 1.002A 1.001A 1.000A 761.499 87.663% 1395 36.0 45.54°C 0.997
11.970V 4.968V 3.286V 4.916V 868.668 58.44°C 115.03V

The load regulation at +12V is a bit loose, at 1.29%. The minor rails fall behind as well, compared to the competition, with the 5V, 3.3V and 5VSB rails registering 2.41%, 4.08% and 5.01% deviations, respectively. Obviously High Power didn’t pay much attention in load regulation and this will surely affect the overall performance.

The 80 PLUS Gold requirements are easily met with 20% and 50% loads, while with full load the reading is very close to 87% despite of the tough conditions that we apply. This is an efficient platform which manages to keep the noise output low, even at high loads with the operating temperatures getting close to 47°C. The semi-passive operation doesn’t last long once the temperatures start to rise, however the fan profile is very relaxed.

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