Santa Rosa screams

The high pitch noise from some of the Santa-Rosa CPU are a result of CPU switching from C4 state to other states. If you have the option of switching entering C4 state off in BIOS of you laptop, you might want to consider that. Unfortunately, there is no such option in my thinkpad X61 laptop. Instead I used RMClock to prevent CPU entering C4 state. I set up mine according to this article. The high pitch noise hardly happened after that. Will test on battery life later. 🙂

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