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User Guide - Lenovo

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Table 6. Config menu items (continued)<br />

Menu item Submenu item Selection Comments<br />

Display<br />

Power<br />

Boot Display Device • ThinkPad LCD<br />

• Analog (VGA)<br />

• Digital on ThinkPad<br />

• Digital 1 on dock<br />

• Digital 2 on dock<br />

Graphics Device • Integrated Graphics<br />

OS Detection for NVIDIA<br />

Optimus<br />

Intel SpeedStep ®<br />

technology (Intel<br />

SpeedStep mounted<br />

models only)<br />

• Discrete Graphics<br />

• NVIDIA Optimus<br />

• Disabled<br />

• Enabled<br />

• Disabled<br />

• Enabled<br />

Mode for AC<br />

• Maximum Performance<br />

• Battery Optimized<br />

Mode for Battery<br />

• Maximum Performance<br />

• Battery Optimized<br />

Select the display device<br />

that is to be active at boot<br />

time. This selection is<br />

effective for boot time,<br />

password prompt, and<br />

ThinkPad Setup.<br />

“Digital on Thinkpad”<br />

is DisplayPort on your<br />

computer.<br />

“Digial 1 on dock” and<br />

“Digital 2 on dock” are<br />

DisplayPort or DVI on<br />

docking station.<br />

Integrated Graphics will<br />

achieve longer battery life,<br />

and Discrete Graphics<br />

enhances performance.<br />

NVIDIA Optimus runs as<br />

Integrated Graphics mode<br />

and Discrete Graphics is<br />

enabled on demand.<br />

Note: NVIDIA Optimus<br />

mode should only be<br />

selected if you are using a<br />

Windows 7 model.<br />

System BIOS automatically<br />

switches Graphics device<br />

setting to NVIDIA Optimus<br />

mode if the OS supports<br />

the feature, and to Discrete<br />

Graphics if the OS does not<br />

support it.<br />

Select the mode of Intel<br />

SpeedStep technology at<br />

runtime.<br />

Maximum Performance:<br />

Always highest speed<br />

Battery Optimized: Always<br />

lowest speed<br />

Disabled: No runtime<br />

support, lowest speed<br />

Chapter 8. Advanced configuration 189

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