AMD Cool'N'Quiet in Windows 7

Source: ENABLING COOL’N’QUIET ON WINDOWS 7

Enabling Cool’n’Quiet on Windows 7 is the same as it is on Windows Vista…

“DO:”
 * C’n’Q must be “enabled” in the motherboard’s BIOS (Note that most BIOS settings disable it by default)
 * For optimal power savings, be sure to also enable C1E and DRAM Power Down in the BIOS
 * The power management scheme/setting must be "balanced" or "power-saver" in the control panel (note that this is the default setting)
 * The motherboard’s BIOS must recognize the CPU that is installed (BIOS status screen will properly display CPU model number upon boot-up)
 * You can verify C’n’Q is working with a utility tool such as “CPU-Z” or “AMD Power Monitor.”

“DO NOT:”
 * Do NOT Select “Performance” as Windows 7’s power management scheme/setting as it will disable C’n’Q functionality
 * Do NOT manually set the CPU frequency or multiplier in the BIOS. Doing so will lock the processor speed and disable C’n’Q functionality
 * Having an old BIOS that does not properly recognize the CPU may disable C’n’Q functionality (flash your BIOS to latest version)
 * There is NO need to install a separate AMD CPU driver… Windows 7 has the AMD CPU driver built-in already!

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