We measured system power consumption, sans monitor and speakers, at the wall outlet using a Watts Up power meter. Power consumption was measured at idle and under a load consisting of a multi-threaded Cinebench 2003 render running in parallel with the "rthdribl" high dynamic range lighting demo.
Measuring system power draw on four motherboards with different assortments of onboard peripherals and extras doesn't give us the best picture of chipset power consumption, but it's clear that Intel's core logic tends to consume less power than Nvidia's nForce designs. Differences in chipset power consumption are more apparent at idle, where they probably make up a greater percentage of the system's overall power draw.
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