PowerNow!

AMD PowerNow! is AMD's dynamic frequency scaling and power saving technology for laptop processors. The CPU's clock speed and VCore are automatically decreased when the computer is under low load or idle, to save battery power, reduce heat and noise. The lifetime of the CPU is also extended because of reduced electromigration, which varies exponentially with temperature.

AMD PowerNow!
Design firmAdvanced Micro Devices
Typedynamic frequency scaling

The technology is a concept similar to Intel's SpeedStep technology. The adaptation of PowerNow! for AMD's desktop CPUs is called Cool'n'Quiet. Newer Opterons also use an adaptation of PowerNow! called Optimized Power Management.

AMD has supplied and supported drivers for its PowerNow! technology that work on Windows 98, ME, NT, and 2000.[1][2] Juding from Linux documentation, PowerNow! seems to be the same as Cool'n'Quiet.[3]

Processors supporting PowerNow!

See also

Power Saving Technologies:

Performance Boosting Technologies:

References
  1. AMD Turion 64 X2 Dual-Core Mobile Technology Utilities & Updates, Advanced Micro Devices, retrieved 2007-04-30
  2. AMD Turion 64 Mobile Technology Utilities & Updates, Advanced Micro Devices, retrieved 2007-04-30
  3. "PowerNow documentation". Linux kernel.
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