Lenovo ThinkPad T420si (English) User Guide - Page 181
NVIDIA Optimus, Enabled, Maximum Performance, Battery Optimized, Disabled, Balanced, Normal, Power
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Table 5. Config menu items (continued) Graphics Device Power OS Detection for NVIDIA Optimus Intel SpeedStep® technology (Intel SpeedStep mounted models only) Adaptive Thermal Management Optical Drive Speed CPU Power Management • Integrated Graphics • Discrete Graphics • NVIDIA Optimus 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 • Balanced Balanced: Balances sound, temperature and performance • High Performance • Normal • Silent • Disabled • Enabled Note: Each scheme affects fan sound, temperature, and performance. Set the speed of optical drive to the desired performance. Enable or disable the power saving feature that stop the microprocessor clock automatically when there are no system activities. Chapter 8. Advanced configuration 165