pit-lotus Posted November 8, 2008 Report Share Posted November 8, 2008 My Dell Latitude C640 Laptop having an Intel P4 Mobile CPU show's in the BIOS that the device can run with two different CPU speed. I was told the higher speed (in this case 2.5 GHz) is when external power supply is connected to the notebook and the lower speed of 1.2 GHz is when running from battery. I understand this is a Power saving fuction to prolong battery operating time when no mains is availabe. When my Laptop in BIOS shows the speed to be 2.5 GHz, The Windows XP shows it running at only 1.2 GHz.(this is checked under: "my Computer", "Properties"). I have also used various utility programs and CPU-Z as well and they show that a 2.5 GHz CPU is inside yet running at 1.2 GHz. How can I get the device running at 2.5 GHz? Greetings Quote Link to comment Share on other sites More sharing options...
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