updated 09:05 pm EDT, Tue October 20, 2009
Form factor now matches aluminum unibodies
iFixit has already dissected the new polycarbonate-unibody MacBook, exposing several minor changes to the internals. Externally, the redesigned housing features curved surfaces similar to the MacBook Pro models with aluminum unibodies. The device also adopts the multi-touch glass trackpad and NVIDIA GeForce 9400M graphics components.
The new model is slightly lighter than its predecessor, although it is still heavier than the 13-inch Pro. Despite the plastic upper housing, the bottom panel is produced from aluminum with a rubberized coating on the contact surface.
Internally, the most significant change involves the new battery. Apple has continued its transition toward lithium-polymer cells that are not designed to be swapped by users. The new entry-level MacBook offers the same 60 watt-hour capacity as its aluminum counterpart.
The plastic MacBook now uses PC3-8500 RAM, allowing users to upgrade past 4GB of total capacity. The hard drive is a bit more complicated to swap, although it is still a relatively simple operation requiring a T6 Torx driver for new HDDs.
Apple is currently offering the new MacBook with a 2.26GHz Core 2 Duo CPU for $999.