The second design, introduced in October 2008 alongside the 15-inch MacBook Pro, shared the latter's unibody aluminium casing, but lacked a FireWire port.

A third design, introduced in late 2009, retained a similar unibody construction but lacked a FireWire port and changed back to white polycarbonate.

Later revisions of the MacBook moved to the 64-bit Core 2 Duo processor and the GM965 chipset, with Intel's GMA X3100 integrated graphics on an 800 MHz system bus.

The iBook's discrete graphics chip was initially replaced by an integrated Intel GMA solution, though the latest revisions of the MacBook were upgraded with the more powerful Nvidia GeForce 9400M and later the 320M.

[9] A more expensive black model, with a larger capacity hard drive, was offered until the introduction of the unibody aluminum MacBook.

[10] In February 2007, the MacBook was recalled because the graphics card and hard drive caused the computer to overheat, which would force the unit to shut down.

[citation needed] Some early polycarbonate MacBook models suffered from random shutdowns; Apple released a firmware update to resolve them.

[citation needed] In February 2010, Apple announced a recall for MacBooks bought between 2006 and 2007 for hard drive issues.

[citation needed] Apple used the A1181 code, printed on the case, for the 1st generation polycarbonate family of models, though 17 variations may be counted if color is included.

On October 14, 2008, Apple announced a MacBook featuring a new Nvidia chipset at a Cupertino, California press conference with the tagline: "The spotlight turns to notebooks".

Other changes include a display which uses LED backlights (replacing the fluorescent tube backlights used in the previous model) and arsenic-free glass, a new Mini DisplayPort (replacing the polycarbonate MacBook's mini-DVI port), a multi-touch glass trackpad which also acts as the mouse button, and the removal of the FireWire 400 port (thus this model doesn't support Target Disk Mode, used for data transfers or operating system repairs without booting the system).

On October 20, 2009, Apple released a MacBook that had a new and more rounded polycarbonate (plastic) unibody design, faster DDR3 memory, a multi-touch trackpad, an LED-backlit display, and a built-in seven-hour battery.

This model has an all-white fingerprint-resistant glossy palm rest, unlike the grayish surface of its predecessor, and uses a multi-touch glass trackpad like the one found on the MacBook Pro.

However, in tests conducted by Macworld, the battery was found to last only about four hours while playing video at full brightness with AirPort turned off.

[51] Slashgear praised the polycarbonate unibody MacBook as "one of the best entry-level notebooks Apple have produced", but criticized it for its lack of a FireWire port and SD card slot.

[52] Nilay Patel of Engadget added that the USB ports were easily dented and the bottom of the laptop became worn and discolored after a few days.