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Gigabyte AORUS GP-AP850GM PSU 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 time is only a hair away from what the ATX spec requires (17ms) and the power ok signal is close as well to 16ms.

Inrush Current

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

The inrush current is low with 115V and a little higher than the normal with 230V.

Load Regulation And Efficiency Measurements

The first set of tests reveals the stability of the voltage rails and the GP-AP850GM’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 5.159A 1.968A 1.942A 0.978A 84.888 85.923% 0 <6.0 46.65°C 0.963
12.267V 5.083V 3.398V 5.114V 98.796 40.33°C 115.12V
2 11.298A 2.959A 2.920A 1.176A 169.342 89.404% 532 14.2 40.77°C 0.983
12.254V 5.071V 3.388V 5.101V 189.413 49.04°C 115.11V
3 17.828A 3.455A 3.399A 1.376A 254.476 90.768% 590 17.0 41.18°C 0.989
12.255V 5.064V 3.382V 5.089V 280.358 51.70°C 115.11V
4 24.374A 3.955A 3.907A 1.576A 339.688 91.208% 765 24.2 41.91°C 0.987
12.246V 5.058V 3.378V 5.077V 372.432 53.10°C 115.11V
5 30.606A 4.948A 4.894A 1.777A 425.015 90.992% 860 27.9 42.12°C 0.986
12.237V 5.051V 3.371V 5.064V 467.092 54.28°C 115.35V
6 36.778A 5.950A 5.883A 1.980A 509.536 90.642% 1075 33.7 42.67°C 0.988
12.228V 5.044V 3.366V 5.051V 562.141 55.19°C 115.11V
7 43.028A 6.950A 6.876A 2.184A 594.873 90.139% 1255 37.8 43.30°C 0.989
12.219V 5.037V 3.360V 5.038V 659.951 56.06°C 115.10V
8 49.284A 7.954A 7.871A 2.388A 680.216 89.520% 1480 42.2 43.63°C 0.990
12.211V 5.030V 3.354V 5.025V 759.846 57.20°C 115.11V
9 55.946A 8.463A 8.360A 2.391A 765.160 88.976% 1630 43.7 44.61°C 0.991
12.202V 5.023V 3.349V 5.019V 859.963 58.82°C 115.09V
10 62.349A 8.972A 8.884A 3.004A 850.007 88.249% 1760 45.5 45.70°C 0.992
12.194V 5.017V 3.344V 4.994V 963.187 60.22°C 115.11V
11 69.346A 8.981A 8.893A 3.008A 934.773 87.580% 1830 46.5 46.34°C 0.992
12.186V 5.012V 3.340V 4.989V 1067.342 61.74°C 115.09V
CL1 0.151A 14.002A 13.999A 0.000A 120.115 84.501% 0 <6.0 46.79°C 0.977
12.260V 5.065V 3.382V 5.125V 142.146 42.00°C 115.16V
CL2 70.522A 1.002A 1.001A 1.000A 873.623 88.531% 1780 45.8 45.64°C 0.992
12.197V 5.030V 3.356V 5.067V 986.802 60.32°C 115.09V

The load regulation at +12V is tight enough, while on the 5V and 3.3V rails stays within 2%. At 5VSB is at 2.9% so it could use some more tuning, although load regulation on this rail isn't of great importance. In the efficiency section, the PSU easily meets the 80 PLUS Gold requirements, although we test at a much higher ambient than the 80 PLUS organisation, where efficiency takes a big hit.

The fan profile is not aggressive, but not super relaxed either. The output noise breaks the 40 dB(A) mark during test #8 and in the overload test the fan makes its presence well felt at 46.5 dB(A). Finally, the semi-passive mode is only active during the two light load tests (test #1 and CL1).

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