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Recent Posts

Recent Posts

Differential Temperature and Noise Levels

11/17/2015 - 10:40

To simulate a demanding environment, some of the warm exhaust air from the PSU under test is recirculated back to the intake through a passive air duct, which allows the PSU air inlet temperature to increase with load, up to 40°C.   The...


11/17/2015 - 10:37

Efficiency is defined by the power output divided by the power input and is usually expressed as a percentage.  If a PSU were a 100% efficient (which none are) 600 watts of AC power going in would result in 600 watts of DC power coming out (with no...

AC Ripple and Noise on the DC Outputs

11/17/2015 - 10:34

The amount of AC ripple and noise present on the DC outputs was checked using a digital oscilloscope.  This AC component may be present in the KHz range where most switching power supplies operate or it may be more prevalent at the 60 Hz line...

DC Load Regulation

11/17/2015 - 10:30

Testing Methodology Establishing an accurate load is critical to testing and evaluating a PC power supply.  PCPerspective’s power supply test bench can place a precise DC load on the PSU under test.  Each power supply is tested under...

Under the Hood

11/17/2015 - 10:27

[inline:files/review/2015-11-17/15-Inside.jpg] Here are a few pictures showing the layout and components inside the EVGA SuperNOVA 650W and 750W P2 power supplies.  Internally the two units are nearly identical (except for a couple larger/additional...

A Detailed Look

11/17/2015 - 10:25

[inline:files/review/2015-11-17/10a-Back.jpg] 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...

Packaging and Parts

11/17/2015 - 10:22

The EVGA SuperNOVA 650W P2 and 750W P2 power supplies arrived packed inside standard retail boxes showcasing each unit’s features and specifications.   [inline:files/review/2015-11-17/7a-Box.jpg] [inline:files/review/2015-11-17/7b-Box.jpg] [...


11/17/2015 - 10:18

[inline:files/review/2015-11-17/5a-Top-Fan.jpg] The EVGA SuperNOVA 650 P2 and 750 P2 power supplies are rated for a combined, continuous output power of up to 650 watts and 750 watts respectively at 50°C operating temperature. Both PSUs incorporate a...

Be Quiet! Silent Base 600 Mid-Tower Case Review

11/09/2015 - 18:13

[inline:files/review/2015-10-28/2-Banner.jpg] Be Quiet! is a well-respected brand, particularly in Europe, for PC power supplies and they are continuing to expand their product offering to include high-end ATX mid-tower enclosures. Be Quiet! introduced...

Final Thoughts and Conclusions

10/28/2015 - 15:02