A Detailed Look
The EVGA Supernova 750W G3 power supply enclosure is painted matte black and measures 150mm (5.9”) long. The same compact chassis is used for all G3 Series power supplies, up to and including the 1000W model. The back panel includes an AC receptacle, main power On-Off switch, and an ECO Thermal Control fan mode switch (On enables fan-less operation).
The 750 G3 power supply incorporates EVGA’s ECO Intelligent Thermal Control System for fan speed control. This allows the end user to select silent, fan-less operation for low to mid power applications if desired.
With the ECO Intelligent Thermal Control System turned ON, the power supply cooling fan does not start spinning until the internal component temperatures reach a pre-programmed setting. The fan then starts out at low speed and gradually ramps up based on load and temperature (see graph above).
The power supply uses a 128mm, seven blade fan on the bottom for cooling. The EVGA labelled fan (H1282412H) is rated for 0.35A at 12 VDC and is controlled by the ECO Thermal Control System. It features a hydraulic dynamic bearing for long life and quiet operation. This is EVGA’s name for a FDB (Fluid Dynamic Bearing) which is an enhanced sleeve bearing with tiny V-shaped grooves to control and pressurize the flow of lubricating oil. Note: the 850W and 1000W models use a similar, slightly higher speed fan (H1282412H) rated for 0.35A at 12 VDC.
The front panel on the 750W G3 incorporates twelve modular cable connectors nicely keyed and labelled to prevent inadvertently plugging a cable into the wrong connector.
All of the modular cables are sleeved with a black nylon mesh covering. If you are curious as to what the little “bumps” at the device end of the cables are, we dissected one of the 4+4 pin CPU cables to show you.
Sure enough, those are little filtering capacitors hidden under the shrink wrap and sleeving to suppress any residual AC ripple (CapXon 220 uF, 16V, 105°C). All of the cables have them except for the four peripheral device cables.
Under the Hood
Here are a few pictures showing the layout and components inside the EVGA Supernova 750W G3 power supply. The Supernova G3 Series is built by Super-Flower and is based on a second generation Leadex platform.
The G3 series features a modern LLC resonant circuit design with DC-to-DC converters for increased efficiency (the VRMs are located in the top-left corner of the photo above). All of the line filtering components reside on the PCB (bottom-right corner). The layout of components is clean while the soldering appears to be very good. All of the capacitors used inside the G3 PSU are high-quality Japanese made (primarily Nippon Chemi-con) electrolytic and solid polymer caps. The 750W G3 uses a single primary electrolytic bulk capacitor rated for 470uF, 400V and 105°C.
Who is the actual
Who is the actual manufacturer? Do EVGA produce it themselves or they are partnering with Seasonic or CWT etc ?
“Here are a few pictures
“Here are a few pictures showing the layout and components inside the EVGA Supernova 750W G3 power supply. The Supernova G3 Series is built by Super-Flower and is based on a second generation Leadex platform.”
Have the powersupply
Have the powersupply manufacturers ever standardized the modular connectors? I have a bunch laying around that I am too chicken to try.
Hi, I asked in the office
Hi, I asked in the office chat and unfortunately the answer is no. The modular connectors are not standardized between manufacturers or even between PSUs from the same manufactures (sometimes you can swap them within the same line but not always).
Question: how well does this compare to the Seasonic Focus Plus series (SSR-750FX) in your opinion? The F+ kindasorta won by a slim margin in JohnnyGuru’s testing, but their rating system is a little… eccentric.
Obviously they’re both awesome units but if you had to choose…
I’ve been a SS loyalist and pricing on the F+ series is very competitive, but there was some concern with the F+ units’ small fan resulting in annoying noise.
Another question: what’s the benefit of a fully modular PSU? Do they expect people to run their PSUs without the ATX12v cable? Is it just for easy-ish replacement if you happen to damage a cable? Would be a lot more valuable IMHO if they bundled shorter and longer cables for different case/mobo combos.
Thanks, its always good to
Thanks, its always good to know that readers find our reviews helpful.
First question: Yes, both the EVGA 750W G3 and the Seasonic 650W Focus+ Gold PSUs proved to be excellent. Performance wise they are very close, both with very good voltage regulation, AC ripple suppression and efficiency (the 750W G3 had slightly better AC ripple suppression). The EVGA G3 also uses a slightly larger fan (128mm vs the Seasonic F+ 120mm) but they both are relatively quiet through mid-power range and both have FDB. And they are both backed by a 10-year warranty. So your final purchasing decision may come down to price – which one has the lower cost when you want to buy one (at this moment the Seasonic 750W F+ is about $20 less than the EVGA 750W G3).
Second question: I personally prefer a semi-modular PSU with a fixed 24-pin, 4+4 ATX CPU, and a pair of PCI-E cable/connectors. Its not like these are optional. Being fully modular adds more connection points (potential for added resistance/slight voltage drop) and a little bulk to the front of the PSU. I suspect manufacturers are going fully modular to lower production costs by eliminating the extra labor required to hand solder fixed leads.