A1181 (EMC 2121 MacBook2,1) 1.83 GHz A1181 (EMC 2121 MacBook2,1) 2 GHz (Late 2006) A1181 (EMC 2121 MacBook2,1) 2 GHz (Mid 2007) A1181 (EMC 2121 MacBook3,1) 2 GHz (Santa Rosa) A1181 (EMC 2139 MacBook2,1) 2.16 GHz A1181 (EMC 2200 MacBook3,1) 2.2 GHz (Santa Rosa) A1181 (EMC 2242 MacBook4,1) 2.1 GHz (Penryn) A1181 (EMC 2242 MacBook4,1) 2.4 GHz (Penryn) A1181 (EMC 2300 MacBook5,2) 2 GHz (Early 2009) A1