[exDM69]

This was measured using the battery status indicator in Android, with periods of ten-twenty minutes and the results were extrapolated. This is not at all an accurate way to measure power consumption. You need to use multimeter and measure real current going to the screen. Or for "real world" battery life results, you'd need to let the battery recharge and then drain all the way, not let it run for 20 minutes, then use a very inaccurate battery status indicator and finally extrapolate.

xda-developer forums seem to be full of tips and tricks that make your Android device battery last longer or the device work faster, but a lot of that stuff is just crap. This article was better than average, but the results are still very convincing.