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Notebook power management settings

(Mu 2 subdivision, paving of the line) also published the first pictures inside the natives is the same with Alexei I. .


Today saw Michael Chu wrote about laptop power management, was his wife complained that the notebook is very noisy fans kept going. Michael was in Intel Corporation doing the work, detailed explained in Windows XP, the energy saving setting Centrino chip health, to solve this problem.


We all know that reducing energy consumption has been the focus of research and development directions of Intel, the Pentium M chip (that is often said that the Centrino) before, there is Intel SpeedStep Technology, CPU power plug in the laptop is not the time to switch to low-frequency mode. . Operating frequency and low power consumption also low when the battery time is naturally longer. . Then launched Enhanced SpeedStep technology, able to run according to the need to switch between high and low frequency. .Because people use your computer most of the time does not always require high-speed operation (for example, when reading), the CPU only when you need to enter the high-frequency short State.. This is no loss of speed, and most of the time kept a low energy consumption. Then, wait until the Centrino platform launch, the CPU has been advanced to be able to automatically switch between several frequency level. But the problem is, even if the CPU has this ability, Windows XP has hidden, this feature can only be achieved through a few obscure set of terms.


In XP's Control Panel -> Power Management under the following options, each option under the sub-plug power supplies and battery both cases, you can set the screen were closed, hard drive shut down and sleep time. . Looks like a glance, but in fact these models, "Home / Office Desk" and "Portable / Laptop", etc., have hidden meanings, as follows:. .


Built-In Scheme 。.


Plugged in behavior. .


On battery behavior 。.


Home / Office Desk. .


CPU(s) run in highest performance state 。.


CPU (s) intelligently select a performance state based on demand. .


Portable/Laptop 。.


CPU (s) intelligently select a performance state based on demand. .


CPU(s) intelligently select a performance state based on demand 。.


Presentation. .


CPU(s) intelligently select a performance state based on demand 。.


CPU (s) begin in lowest performance state and then get slower and slower via software manipulation. .


Always On 。.


CPU (s) run in highest performance state. .


CPU(s) run in highest performance state 。.


Minimal Power Management. .


CPU(s) intelligently select a performance state based on demand 。.


CPU (s) intelligently select a performance state based on demand. .


Max Battery 。.


CPU (s) intelligently select a performance state based on demand. .


CPU(s) begin in lowest performance state and then get slower and slower via software manipulation。.


In other words, even if the hard drive of different power modes of display set to close the same time, their function is not the same. . The most exasperating is, Stone has always chosen "Home / Office Desk" mode, plugged in the power of the time (95% of the state of my computer), yet does not use CPU-saving features! It in vain in the high frequency mode, heating, cooling fan will always have to start. . So, Michael Chu proposal would have to select the Portable / Laptop mode. .Some brands of computer in addition to the above several standard power mode, there are other models, such as DELL provides Maximum Battery (QuickSet) and the Maximum Performance (QuickSet), etc., but no one told you what it does not use the power saving features.


Microsoft probably wants to make fools of the software, designed from the user's point of view, it seems more intuitive. . In short, it failed in Anzhe implemented very failure, these little power mode is not intuitive. . Really not as good as directly to an option "is automatically turned down CPU frequency function." . Most of the original comment also expressed this view, words still more extreme, do not know any other reason Microsoft did not, quite depressed people. . On further about the manual settings through the command line method, comrades interested can take a look. .