Internal Slot-loading Super-Drive: 4 × DVD+R DL writes, 8× DVD±R read, 4 × DVD±RW writes, 24 × CD-R, and x CD-RW recording. Memory: 2GB (two 1GB), expandable to 8GB (4GB supported by Apple). MacBook 5.2 (Early 2009): Introduced on January 21, 2009. MacBook 5,1 (Late 2008 Aluminum): Announced on October 14, 2008. It was replaced in October 2009 by the unibody polycarbonate model. This MacBook model was shipped in a single configuration, with 2 GB of RAM. The hard disk capacity was increased to 160 GB. The processor speed was increased by 6.5% to 2.13 GHz. Introduced in May 2009, the MacBook 5,2 (13-inch, Mid 2009) was a modest speed-bump of the previous MacBook. This MacBook model was shipped in a single configuration, and was replaced in June 2009 with a new model. The graphics chipset received a significant upgrade. The processor ran at a slightly slower clock-rate. Introduced on January 21, 2009, the MacBook 5,2 (13-inch) was a feature-bump of the existing low-end white MacBook model. 
7.2 MacBook (13-inch, 2.0GHz Intel Core 2 Duo, Early 2009).6.2 MacBook (13-inch, 2.0GHz Intel Core 2 Duo, Late 2008 Aluminum).6.1 MacBook (13-inch, 2.4GHz Intel Core 2 Duo, Late 2008 Aluminum).
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