A Detailed Look
The SuperNOVA 650 GM power supply enclosure is painted matte black and measures 100mm (3.9”) deep. The back panel includes an AC receptacle, main power On-Off switch, and an open honey-comb grill.
The 650 GM incorporates EVGA’s Automatic ECO Mode fan control, which allows fan-less operation at low power for silent operation (up to about 30% load depending on ambient temperature).
(Courtesy of EVGA)
The power supply uses a 92mm x 15mm fan on the top for cooling. The Yate Loon fan (D92BH-12B) is rated for 0.60A at 12 VDC and is controlled by the ECO Mode fan speed circuit. It features dual ball bearings for long life and reliable operation.
The front panel on the 650 GM has eight modular cable connectors nicely keyed and labelled to prevent inadvertently plugging a cable into the wrong connector.
All of the modular cables are dressed with black plastic mesh sleeving. Note these cables are intentionally short for use in small form-factor cases.
Under the Hood
Here are a few pictures showing the layout and components inside the EVGA SuperNOVA 650W GM Series power supply. EVGA appears to be using FSP as their OEM partner for the GM Series.
The SuperNOVA GM series features a modern LLC resonant circuit design with DC-to-DC converters for increased efficiency (the VRMs are located on the daughter card along the left side in the photo above). The layout of components is clean while the soldering appears to be very good. All of the capacitors used on the main PCB are high-quality Japanese made caps. For example the 650 GM uses a single Nippon Chemi-con KMZ primary electrolytic bulk capacitor rated for 330uF, 420V and 105°C.