Aerofoil does not rely on the Microsoft .net Framework on the other hand which is probably the most important factor. The computer memory footprint of Aerofoil is therefor much smaller than that of the other program.

The program can be selected to run at startup. It will place a icon in the system tray which can be used to quickly access the available options seen above. It is probably a good idea to have this or any of the other tools running on Vista laptops that run on battery.

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That’s usually not a problem unless the applications used demand lots of cpu power. That’s not the case when surfing the Internet, creating spreadsheets or writing a Word document. Both Intel and AMD provide techniques that reduce the cpu frequency of the laptop.

SpeedswitchXP is a small applet sitting in the system tray that makes use of those techniques. It provides access to four settings: Max. performance, Battery optimized, Max. battery and dynamic switching.

Max. performance is the default setting for the laptop. The cpu is running at full speed with it. Battery optimized reduces CPU speed while max. battery reduces the cpu speed even further for maximum battery capacity. Dynamic switching is the last option which dynamically changes the cpu frequency depending on demand.

SpeedswitchXP is an old software program. It was updated in 2006 the last time but it should work fine with several relatively new cpus like Intel’s core duo series.

Users who have used Intel’s Speedstep application for Windows 9x, ME and 2000 in the past will see many similarities between the two applicatons. SpeedswitchXP is providing additional options on the other hand and support for Windows XP.

Is it working for the cpu build into your laptop? I honestly cannot answer that question. The best bet is to try it out and see if it works.

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The software offers a pre-defined sets of colors that have names such as Patriotic, My Eyes!! and Winter displaying small preview images of the colors that are cycled through. If you take Winter for example you see white and icy colors when you click on edit.

It is furthermore possible to add colors to the cycle and even create your own. While this is nice for presentation it does not really add something to your daily routine. There is however an interesting option for notebook users.

You may either change the color to a darker one when you use the notebook battery only which would result in lesser power consumption or change the color according to the battery life. This would cycle the color from white to a darker color as well depending on the power level of the battery.

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