CONFIGURING SLI
 > Windows XP 
Go to Start  Control Panel and select the NVIDIA Control  
Panel icon.
 > Windows Vista
 z
Classic view 
Go to Start  Control Panel and select the NVIDIA Control  
Panel icon.
 z
Control Panel Home view 
Go to Start  Control Panel  Additional Options and select 
the NVIDIA Control Panel icon.
Enabling / Disabling SLI
2  Once you have the NVIDIA Control Panel open, click on  
Configure SLI, Surround, PhysX in the left task pane.
3  Select from the following multi-GPU configurations: 
 > Maximize 3D performance 
Select this mode when you want your graphics cards to work 
together to increase your rendering performance and image quality.
 > Acivate all displays 
Activate all displays disables SLI and activates all connected 
displays (heads).