Lenovo ThinkPad T520 (English) User Guide - Page 227
ThinkPad LCD, OS Detection for NVIDIA
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Table 8. Config menu items (continued) Menu item Submenu item Display Boot Display Device Graphics Device Power OS Detection for NVIDIA Optimus Intel SpeedStep® technology (Intel SpeedStep mounted models only) Adaptive Thermal Management Selection • ThinkPad LCD • Analog (VGA) • Digital on ThinkPad • Digital 1 on dock • Digital 2 on dock Comments Select the display device that is to be active at boot time. This selection is effective for boot time, password prompt, and ThinkPad Setup. "Digital on Thinkpad" is DisplayPort on your computer. • Integrated Graphics • Discrete Graphics • NVIDIA Optimus "Digial 1 on dock" and "Digital 2 on dock" are DisplayPort or DVI on docking station. Integrated Graphics will achieve longer battery life, and Discrete Graphics enhances performance. NVIDIA Optimus runs as Integrated Graphics mode and Discrete Graphics is enabled on demand. Note: NVIDIA Optimus mode should only be selected if you are using a Windows 7 model. • Disabled • Enabled System BIOS automatically switches Graphics device setting to NVIDIA Optimus mode if the OS supports the feature, and to Discrete Graphics if the OS does not support it. • Disabled • Enabled Select the mode of Intel SpeedStep technology at runtime. Mode for AC • Maximum Performance • Battery Optimized Mode for Battery Maximum Performance: Always highest speed Battery Optimized: Always lowest speed • Maximum Performance • Battery Optimized Disabled: No runtime support, lowest speed Scheme for AC • Maximize Performance • Balanced Scheme for Battery This selects a thermal management scheme to use. Maximize Performance: Reduces CPU throttling • Maximize Performance Chapter 8. Advanced configuration 209