Apple has published a tech support note detailing how MacBook Pro users can switch between graphics processors - and it's a bit more fiddly than expected.
Introduced last night, these new Macs ship with two GPUs installed. Both from Nvidia, these include the GeForce 9400M integrated graphics processor for better battery life and the powerful GeForce 9600M GT discrete graphics processor for higher performance.
Users select between higher performance or better battery life in System Preferences>Energy Saver. These systems ship with "battery life" selected as the default option.
MacBook Pro users must then log out and log back into their system for the change to take effect, though they do get the chance to save their files.
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