iMac 27″ A1419 Logic Board & Heat Sink $150.00 A1419 – iMac Late 2012 iMac 27" A1419 Logic Board & Heat Sink quantity Add to cart Add to Quote Continue Shopping Category: A1419 (27" iMac) Late 2012-Mid 2017 Description This logic board, processor & heat sink is for a iMac 27″ Late 2012 – A1419 – SN: D25KC4AYDNMP – 661-7157, 820-3299. 3.2 Ghz Intel Core i5 processor, and Nvidia GTX 675MX Graphics Chip with 1GB of VRAM.