On Tuesday, the ultimate nerds over at iFixIt published a full teardown gallery of Apple’s new white unibody MacBook laptop that is in turn replacing the low-end US$999 white polycarbonate MacBook notebook.

Some of the major changes include:

- Polycarbonate unibody construction.

- Display featuring LED backlighting.

- A multi-touch glass trackpad.

- Integrated battery.

- No more FireWire or IR port.

- No external battery indicator.

- No Mini-DVI port, replaced by a Mini DisplayPort.

iFixit has highlighted several interesting aspects of the new design:

-The new battery is only 5 more watt-hours than the previous version’s yet it adds two hours of run time, meaning the machine is markedly more efficient.

-The battery is actually lighter than the older model.

-Unlike the earlier model, AirPort and Bluetooth share the same board, and all three antenna cables route into the display, meaning a possible improvement in Bluetooth range.

-The MacBook has exactly the same GPU and CPU as the baseline 13″ MacBook Pro.

Since a picture’s worth quite a few words, take a gander at the video:

Head on over, take a gander and if you pick up a new unit for yourself, let us know what you think of it in the comments.