Antec HCG 750W Bronze Power Supply Review

Practical test …

Before we come to installation, let’s get down to the basic noise level. Since Antec advertises on its website that the built-in fan is ideal for quiet working and the data sheet from Yate Loon Electronics says otherwise, we start the power supply in a quiet environment without noise. Connect the green cable to the 24-pin mainboard connector with a black cable (see PC power supply pin assignment) by plugging in a standard ATX starter bridge (note minimum load if necessary).

As soon as the power supply is switched on, you can hear the fan. The working noise is okay and can be classified approximately at 20dB. But friends of silent computers will certainly not be happy here. However, the noise level of the power supply unit is not noticeable when installed in the chassis. It would have been desirable if Antec had controlled the fan temperature as with the previously tested Antec HCG 750W Gold power supply so that it only switches on at a certain temperature. This would have been appropriate in this price range, but this function is only available with the Antec HCG 750 Gold.

The installation was very easy as usual. The screws supplied were easy to tighten and the power supply unit fits exactly as expected. The supplied connection cables are also sufficiently long. However, Antec did not sleeve the cables. This is quite practical when laying in the case, even if you have to make a smear on the appearance depending on your taste. This is also a clear difference to the Antec HCG750 Gold power supply.

Here is a brief look at the test system:

Motherboard MSI X370 KRAIT GAMING
CPU AMD Ryzen 1600X
Graphics Card 1 Palit 1070ti Dual
Graphics Card 2 AMD Radeon R7 250
Case Phanteks Enthoo Pro
SSD 4x
HDD 5x

We have extended the test system by an AMD Radeon R7 250 in order to load the power supply properly. In addition, 2 additional SSDs and 5 HDDs are used. We overclocked the CPU to 4 GHz and adapted the VCore to 1.376V accordingly.

Before we started the load test, the voltages of the power supply were measured by multimeter. This resulted in the following values:

DC Output
Idle measurement

All in all, the measured values are very good and within the tolerances.

During load operation the voltages were read out with HWinfo64, therefore the values for -12V and +5VSB are missing here. The 5V as well as the 12V line were additionally measured with the multimeter to have a better comparison to the idle values. To achieve a corresponding load, we use Furmark, Prime95 and Heavyload (see OC Downloads).

DC Output
+5V Multimeter
+12V Multimeter
Load measurement

Our system ran for 4 hours. There were no crashes or problems with the power supply. Also the heat development of the power supply was in the green range. The power consumption of our test system was 400 watts on average and the power supply only got hand warm. The fan speed also remained unchanged. It is also interesting that the voltage on the +12V line under load on the mainboard side seems to drop to 11.664V, while 12.100V could be measured directly on the power supply. Here the cause is not the power supply but rather the mainboard.

Antec HCG 750W Bronze Result and overall impression …