Asus EN8400GS SILENT/DI/512MD2(LP) Software Reference Manual page 37

ASUS HyperDrive
To activate HyperDrive:
1. Click the Enable HyperDrive check box to enable or disable the
HyperDrive feature.
2. Click the option buttons to select the HyperDrive Mode.
This page just only shows in version 4.54 and later.
HyperDrive Modes
A. 3D Game mode - In 3D Game mode, ASUS SmartDoctor
automatically sets the GPU clock to its highest possible value when
playing 3D games for better 3D performance. It reverts to its
normal GPU core clock after playing 3D games. Make sure to install
the ASUS Enhanced driver when using the HyperDrive 3D mode.
B. CPU usage mode - When set to this mode, ASUS SmartDoctor
dynamically adjusts the GPU core clock depending on the Central
Processing Unit (CPU) work load. ASUS SmartDoctor increases the
GPU core clock when the CPU is busy and decreases it when your
CPU is idle.
C. GPU Temperature mode - In Temperature mode, ASUS
SmartDoctor smartly adjusts the GPU clock according to its
temperature. If the GPU temperature increases, ASUS SmartDoctor
automatically decreases the GPU core clock, and vice versa.
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