Vista provides three power options to choose from: Balanced, Power saver and High performance. Which one should you choose? It depends on whether you want to complete an intensive task quickly, you want to let Vista decide the best performance, or if you are using a laptop and need to save battery power.
If you are running a laptop on batteries, you may want to use the Power Saver mode. Your laptop may run slower, as the CPU is capped at about 40-50% of its capacity.
Running your PC in Balanced Mode, give you the best of both settings; Power Saver and High Performance. CPU utilization is control from 5-100%.
If you are running a high intensive game or working with various documents at once, you may choose the High Performance, which will pegged the CPU at 100%.
Note that if you are running your laptop on battery power, the battery will be drained much faster than when using the balanced or power saver modes.
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