Most if not all the attention surrounding Windows Vista Service Pack 1 has been around performance, reliability and compatibility, but you probably didn’t know SP1 also makes short strides in terms of Vista’s power efficiency. And by short, I really do mean short because we’re talking about improvements in the magnitude of only a couple percents. That in the context of 5 hours battery life is a mere additional 6 minutes. Having said that, some is better than none.
The first of two improvements is in the display subsystem. As you are probably aware of, the Desktop Window Manager (DWM) in Vista utilities the 3D rendering capabilities of your graphics card to draw the desktop and windows.
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