A Detailed Look
The EVGA SuperNOVA P2 power supply enclosures are painted with a matte black hammertone finish and measure 165mm (6.5”) long. The back panel includes an On-Off switch, AC receptacle and open honey-comb grill.
Around on the front side, you will note a small 2-position switch up in the top-right corner in the photo above labeled “ECO OFF/ON”. The SuperNOVA P2 power supplies incorporate 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. Unlike some previous SuperNOVA PSUs, the switch is located on the front of the power supply instead of the rear, which makes the switch harder to access once the PSU is installed.
With the ECO 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).
Both power supplies use a 140mm, seven blade fan on the bottom for cooling. The Globe Fan (RL4Z B1402512HH) is rated for 0.50A at 12 VDC and is controlled by the ECO Thermal Control System. It features dual ball bearings for long life and quiet operation.
(EVGA SuperNOVA 650W P2)
(EVGA SuperNOVA 750W P2)
The front panel on the 650W P2 incorporates nine modular cable connectors while the 750W P2 has twelve, along with the ECO fan mode control switch, all nicely labeled.
All of the modular cables are sleeved with a black nylon mesh covering. The cable sets for the 650P2 and 750P2 are very similar, except the 750P2 gives you one extra EPS (CPU) cable, two additional 8-pin PCI-E cables/connectors, and an additional SATA cable.