Power Consumption Test
Using our PROVA Power Analyzer WM-01--or "Power Thingy" as it has quickly become known as to our readers--we are now able to find out what kind of power is being used by our test system and the associated video cards installed. Keep in mind that it tests the complete system (minus LCD monitor, which is plugged directly into AC wall socket).
There are a few important notes to remember, though. While our maximum power is taken in 3DMark06 at the same exact point, we have seen in particular tests the power being drawn as much as 10 percent more. We test at the exact same stage every time, so tests should be very consistent and accurate.
The other thing to remember is that our test system is bare minimum--only an SSD hard drive is used with a single CD ROM and minimal cooling fans.
So while the system might draw 400 watts in our test system, placing it into your own PC with a number of other items will result in a higher draw.
Taking a look above, you can see that idle power draw doesn't change too much. The difference between the single card setup and the 4-way setup is just under 40 watt.
When it comes to the load side of things, though, you can see the changes are much more significant, as you'd expect. Our 1200 watt Corsair AXi power supply had no problems dealing with the four card setup during our whole testing process.
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