Great news for computer users who have green in mind. Computer users who sporadically play games that demand intensive usage of graphic but also using such a gaming machine to work on things that demand little of graphic power may appreciate the new technology that Nvidia is advertising which known as Nvidia Optimus. Nvidia claims that with Nvidia Optimus, computer users could save huge amount of computer energy and consequently money as the technology switches the computer graphic between integrated and discrete graphics.
Computer user who uses Nvidia Optimus enabled computer may not notice when his or her computer was switching between integrated and discrete graphics since the process was automatic. When playing a video game such as Modern Warfare 2, the computer with Nvidia Optimus technology automatically behind the scene switches on discrete graphic that allows the computer to use a much more powerful video graphic hardware. At other times, the computer with Nvidia Optimus technology is mostly on integrated graphic hardware which is a weaker graphic solution that spends less energy and subsequently providing longer battery life. This solution is great since it is energy efficient. Source.