
A d v a n c e d M e n u
CPU Features Submenu of the Advanced Menu
The CPU Features Submenu configures the system processor. Note that this submenu only appears in certain configura- tions, based upon the system CPU.
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 | PhoenixBIOS Setup Utility | 
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 | Main | Advanced | Security | Power Savings | Exit | 
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 | CPU Features | 
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 | Item Specific Help | 
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 | Select Enhanced | 
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 | SpeedStep(R) Technology: | 
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 | [Battery Optimized] | Intel(R) SpeedStep(R) | 
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 | On AC: | 
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 | [Maximum Performance] | Technology enabled or | 
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 | XD Bit functionality: | 
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| F1 Help | Select | Item | Change | Values | |
| ESC Exit | Select | Menu | Enter | Select | ▲  | 
Figure 9. CPU Features Submenu
F9 Setup Defaults
F10 Save and Exit
| Menu Field | Options | Default | Description | 
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| SpeedStep(R) | • Disabled | [Enabled] | Enables or disables SpeedStep(R) Technology which | 
| Technology: | • Enabled | 
 | allows the user to determine the CPU performance when | 
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 | the tablet is running on AC or battery. This technology | 
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 | decreases power consumption by decreasing CPU speeds. | 
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| On Battery: | • Maximum Performance | [Battery | Allows the user to select the CPU performance when the | 
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 | • Battery Optimized | Optimized] | system is running on battery power. | 
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| On AC: | • Maximum | [Maximum | Allows the user to select the CPU performance when the | 
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 | Performance | Performance] | system is running on AC power. | 
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 | • Battery Optimized | 
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 | • Automatic | 
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| XD Bit | • Disabled | [Enabled] | Allows the user to enable and disable the Execute Disable | 
| functionality: | • Enabled | 
 | Bit functionality. Execute Disable Bit allows the processor | 
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 | to classify areas in memory where application code can | 
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 | and cannot execute. In the event an internet worm | 
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 | attempts to insert code in the buffer, the processor | 
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 | disables code execution to prevent damage or worm | 
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 | propagation. | 
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