Visual inspection
The Seasonic G12 GC-750W Gold has been on the market for a while now, and it serves as Seasonic’s offering in terms of affordable power supplies. What makes this unit interesting is that the OEM behind it is not Seasonic, but Hella Technology.
In this review we shall see if this power supply, while affordable can keep its own when compared to Seasonic’s own models.
In terms of the design, the G12 GC-750W Gold has a simple design, with a casing that is reminiscent of the older Seasonic models, I’m talking about the Seasonic X series units.
As for the footprint of the G12 GC-750W, this unit is rather small, it has a length of 140mm, a width of 150mm and a height of 86mm.
The fan used to cool the internal components of the power supply has a size of 120mm and uses a Sleeve Bearing system, with a rated speed of 2200RPM. Fortunately, this fan has been widely used before and has proven to be reliable.
The fan grill is part of the power supply casing as it is stamped into the metal.
The sides of the power supply have a standard sticker that has the complete technical specifications of the power supply. Mainly, the way the power is being delivered across the power supply rails.
Apart from the technical information, these labels have the same blue design as the packaging of the power supply.
The back part of the power supply is simple as the G12 GC-750W has no modular system or cables. Instead, this power supply has all of its cables attached permanently.
On the rear of the power supply, we have a simple honeycomb stamped mesh grill for the exhaust of the fan and the On/Off switch alongside the AC socket.
The cables used with the G12 GC-750W are simple and non-modular, however, these are flat style ribbon cables. Why it’s important for the cables to be flat is that they can be overlapped inside your system and thus, be easier to route and take less space.
The fan present on this power supply is made by Yate Loon and has the standard 120mm dimensions. The fan has a maximum rated speed of 2200RPM and uses a two-pin connector to link with the power supply. This fan uses a standard sleeve bearing system that has proven to be reliable yet, an older technology by today’s standard.
The internal build quality is good for the most part, and now we can clearly see that this is not a Seasonic made power supply, as the layout is different and the Hella technology quality is open for us to see.
There are large all-black heatsinks that are cooling the main components of the power supply, in addition, this unit uses a single main capacitor.
The filtering starts at the back of the AC socket with no less than 4 Y capacitors, 3 X-capacitors and 3 chokes with and additional fuse. We also have a varistor installed here.
The APFC section has a single main capacitor made by the Taiwanese company, Ltec. This capacitor has an operating temperature rating of 105 degrees Celsius and the electrical specifications: 560uF, 420V.
The secondary APFC capacitors are made by two companies, Asian X and ChengX. These capacitors, while not made by a good Japan brand are rated for 105 degrees Celsius which is a great sign to see.
One interesting thing here is that we can see a spot on the PCB marked as LED 12 V, which means that this platform or at least this power supply in the future might have some type of LED array inside, or around the fan more than likely.
The DC-DC controllers used on this power supply are made by Anpec Electronics Corp and have the model number: APW7073. These controllers drive dual N-channel MOSFETs for power conversion.
One of the relays used on the G12 GC-750W is made by Yuanze and has the model number Y32f-SS-112L. This type of relay has been used before in some affordable power supplies so it’s not a big surprise that it’s present here.
The resonant controller of the unit is made by Champion and has the model number: CM6901T6X. Quite a good component and we have seen this one on more expensive power supplies, so no worries here.
The PWM Controller is made by Excelliance MOS Corp and has the model number: EM8569C. This is a controller that has been widely used in many power supplies, this includes the Seasonic focus series from a few years ago as well. This controller is what handles most of the protections offered by the power supply, among other functions that it has and are being used within the power supply system.
Made by Champion, we have the CM6502UHHX, the power supply power management controller, which is mostly used in power factor correction, or PFC for short.
This little chip has a long track record for reliability and performance, being used in a wide array of power supplies various manufacturers.
The secondary monitoring integrated circuit (IC) is made by Silicon Touch Technology Inc. and has the model number: PS223. The primary function is to provide protection against over-voltage, under-voltage, and over-current, and it also includes over-temperature protection
The soldering quality is not exactly the best or on the Seasonic level of quality but it’s something that will work in time so no worries here. However, there are places where the soldering could have been better, especially on the wire endings.
