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Amazon.com: Odyson - Logic Board 2.7GHz Core i5-4570R (Integrated CPU) Replacement for iMac 21.5" A1418 (Late 2013) : Electronics
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Amazon.com: Odyson - Logic Board Replacement for iMac 21.5" A1311 (Mid 2011, Late 2011) : Electronics
SOLVED: Can a 2009 core 2 duo logic board be replaced with a 2010 i3 board? - iMac Intel 21.5" EMC 2308 - iFixit
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