ASUS Eee PC Overclocking on Windows XP

As you may be aware, the Eee has a 900Mhz CPU which has had the FSB under clocked to 70 Mhz. This not only means that the CPU is running at 630Mhz (70 x 9) but also the RAM etc. This causes the Eee to perform quite a lot worse than a 900Mhz machine would.

There are currently beta BIOS' which allow the user to run the CPU at full speed (at the cost of a bit of battery life) but I'm not fond of the idea of putting one of these on my Eee

People have been doing software clock adjustments before on the Eee but not as easily as it is with Eeeclock, written by dci of the eeeuser forums.

http://forum.eeeuser.com/viewtopic.php?id=9320

When testing this software, i found that my Eee would not clock its FSB reliably to 100Mhz so I modified the eeeclock.ini file to set my maximum overclock to 95Mhz. I also removed the medium setting as this seemed pointless and added a 55Mhz option in the hope i can increase my battery life a bit and keep the fan off a bit more by running at 495Mhz

Here is the line I used in the config file. Notice that there are FSB speed settings which dont have titles, these are incremental steps. This is because changing the CPU speed a large amount in one go can easily crash the Eee. Think of it as like changing through gears.

Freqs = 55,0,495Mhz; 60,0; 70,0,630Mhz; 80,1; 85,1; 95,1,855Mhz;

Finally all i had to do was create a shortcut to Eeeclock in the startup folder with the parameters 55 0 set. This will cause the Eee to switch to 495mhz (55mhz FSB) on startup

"C:\Program Files\eeeclock_0.1.2\eeeclock.exe" 55 0

Thats it, my Eee now runs at 495Mhz but occasionally i can switch to 855Mhz when things feel like they are chugging a bit, flash heavy websites for example. Do take care with this, it is possible (though I think unlikely if you dont go past 900mhz) to damage your Eee doing this.