sudo add-apt-repository ppa:ubuntu-x-swat/x-updates
sudo apt-get update && sudo apt-get install nvidia-current nvidia-current-modaliases nvidia-settings
Optimus technology leverages Windows 7â€Ÿs ability to allow two independent graphics drivers to be active at the same time.
The beauty of Optimus is that it leverages standard industry protocols and APIs to work. From relying on standard Microsoft APIs when communicating with the Intel IGP driver, to utilizing the PCI-Express bus to transfer the GPUâ€Ÿs output to the Intel IGP, there are no proprietary hoops to jump through. NVIDIAâ€Ÿs new hardware and software design seamlessly blends into the existing frameworks.
One of the primary advantages of Optimus compared to Switchable Graphics is that it does not need additional hardware like multiplexers. An Optimus implementationâ€Ÿs simplicity reduces
costs, eases design and verification effort, and speeds time to market. As noted earlier, all display connections are made directly to the IGP. Regardless of which display adapter is
processing the workload, the IGP will push the output to the display.
When the (Nvidia) GPU can provide an increase in performance, functionality, or quality over the IGP for an application, the NVIDIA driver will enable the (Nvidia) GPU. When the user launches an application, the NVIDIA driver will recognize whether the application being run can benefit from using the (Nvidia) GPU. If the application can benefit from running on the (Nvidia) GPU, the (Nvidia) GPU is powered up from an idle state and is given all rendering calls. Using NVIDIAâ€Ÿs Optimus technology, when the discrete GPU is handling all the rendering duties the final image output to the display is still handled by the Intel integrated graphics processor (IGP). In effect, the IGP is only being used as a simple display controller, resulting in a seamless, flicker-free experience with no need to reboot. When less critical or less demanding applications are run, the discrete GPU is powered off and the Intel IGP handles both rendering and display calls to conserve power and provide the highest possible battery life.
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