Testing
The following system was used to test the cooler:
– Processor: Intel i7 13700k @ 5.40 GHz
– Motherboard: Biostar Z790 Valkyrie
– RAM: Neo Forza MDK5 DDR5 96GB 6000MHz
– GPU: MSI GeForce RTX 3090 Suprim X
– SSD: NeoForza NFP075 2TB
– CPU Cooler: Arctic Liquid Freezer II 240
– Case: be quiet! Silent Base 802 White
– OS: Windows 10 64-bit
The above system has a power consumption of approximately 850W when in full load and 80W when idle, in order to test the efficiency of the Power Supply, the power draw of the system was measured at the wall socket. Also, the voltages were measured on the +12v +5v and +3.3v using a multi-meter.
To load the system to its maximum the stability test of the AIDA64 Extreme was used with Intel Burn Test V2.
The Power Supply was tested with the system both idle and at maximum load.
Power Supply efficiency
For rail voltage tolerance levels, ATX (Power Supply Design Guide) specify that a 5% variable fluctuation is acceptable.
Voltage oscillation idle
Voltage oscillation load
The noise level was measured at three different distances from the fans (10cm, 20cm, 30cm.) the noise was measured with a margin of error of ± 5 db.
Final thoughts
The Seasonic G12 GC-750W Gold is an affordable power supply, being available at under 100USD or EUR, probably the most affordable Seasonic has ever sold. However, to get this low in terms of pricing, some sacrifices had to be made, and that unfortunately involves the platform OEM and the internal components of the power supply.
For starters, this while branded as a Seasonic power supply, is in fact made by Hella Technology, which is not a bad company but it’s not on Seasonic’s level when we talk about build quality and choice of components.
Nevertheless, even with cheaper components and a different manufacturer, the Seasonic G12 GC-750W Gold still delivers a good performance and meets the Gold standard for efficiency with ease.
The internal build quality is good enough for this price tag, while there are no Japan made capacitors, all capacitors are rated for 105 degrees Celsius. Most components are well known and of good quality. If there is a drawback of the internal quality with this power supply is the soldering quality which in some parts is not that great, yet nothing that can affect the performance of the power supply.
The included cables are the standard power supply flat ribbon style cables. All black and easy to work with thanks to their flexibility and length. However, this power supply has no modular cable system and thus, the bulk of cables will be present at the back of the power supply at all times.
In conclusion, the Seasonic G12 GC-750W Gold is a good value power supply that can still be found for a decent price, and while it is not a 100% Seasonic built and tested power supply, it still delivers a good performance.
In terms of the efficiency, this unit meets the 80Plus Gold standard with ease and the voltage oscillation is well within the standard for such a power supply. The only complaint with regards to the performance is the noise output of the fan which could have been lower. Either by using a higher quality fan or using a better fan control system.
The internal build quality is good enough for a regular gaming system. There is nothing to complain about, except for the lower-than-expected soldering quality and not much in terms of Japan made capacitors. Even so, these Asia capacitors are high temperature rated and thus, they will be fine for years.
Looking back at the testing and the performance results, we can conclude that this power supply is a good choice for those that want an affordable power supply that will still deliver on its promised performance with a long enough warranty.
