10-16-2008 03:16 PM
Try some BIOS Options - Config/Power. If you disable SpeedStep, clock is about 1100 mhz.
My settings are:
- Mode for AC - Automatic
- Modef for Battery - Battery Optimized
- Scheme for AC && for Battery - both Balanced
This could not get so much better, but it`s worth trying.
10-24-2009 05:10 PM
Problem Solved. It is a mecanical problem in the fan.
The noise is caused by a vibration in the electrical contacts in the top of the fan. As soon as I pushed the three electrical cables that are connected to the fan, noise stoped. A qualified technician is required for the procedure.
ThinkPad X61 Hardware Maintenance Manual will give detail on how to remove the keyboard.