One of the great features of the new Macbook Pro is support for dual graphics. No, it's not an SLI configuration like that found in gaming laptops, but switchable graphics in which you can use one or the other.

The nVidia GeForce 9400M GT is an integrated set that can potentially get battery life into the 5-hour range, while the 9600M GT chipset gets you about 4 hours, according to Apple. How you switch them is pretty simple: Go to system preferences and choose the Energy Saver setting. You then select "Better Battery Life" to choose the 9400M GT or "Higher performance" to enable the 9600M GT chipset. You will have to log out of the system to finalize the switch, though.