Efficiency Testing

To test efficiency, plugged in the UPM power meter to the Belkin UPS and the highest sustained AC power consumption was recorded over the 1 hour test period. All tests were run twice and if there were anomalies, the test was run a third time. All “Startup” results are the peak power output required while powering on the computer between the POST screen and a usable WindowsXP desktop.

The first efficiency test’s “Load” value was done with an overclocked processor and the graphics card at stock speeds while running Company of Heroes. The values are the highest peak power draw over the 1 hour test period.

The second efficiency test’s “Load” value was done with an overclocked processor and a heavily overclocked (both 2D and 3D overclocked to the same value) graphics card. Company of Heroes was played while Orthos was running on the processor in the background.

The third efficiency test was run with 2 8800GTS 320MB cards in SLI running at stock speeds with the processor overclocked to 2.6Ghz. Company of Heroes was then run for 1 hour to determine load values.

The final test was run with 2 8800GTS 320MB cards running in SLI and overclocked to 650/1800. Company of Heroes was played for 30 minutes while the overclocked processor (at 2.6Ghz) ran Orthos in the background. In addition, HDtach was looped in the background and a full DVD was burned as well.


Efficiency Test #1




Efficiency Test #2




Efficiency Test #3




Efficiency Test #4



Efficiency on the Neopower 650W is top notch but there were some interesting tendencies for lower efficiency as the load increased in the SLI tests. Without a doubt, this power supply retained its claimed 80% or more efficiency but it is a bit unfortunate that the power consumption increased when compared to the other two power supplies we have it up against. One way or another, the numbers put forth by this power supply are nothing short of stunning.