iMac 27" A1419 Late 2015 Logic Board W/ 2 GB AMD Radeon R9 M395 GPU *N - Part Haven
Apple Computer iMac 27-inch 3.5 GHz Core i5 (i5-4690) iMac 27-inch 4.0 GHz Core i7 (i7-4790K) Compatible Order Number MF886LL/A Compatible Model Number
Original Logic Board 661-7101 For Imac 21.5" A1418 Motherboard 820-3302-a 820-3588-a 820-00597-a 2012 2013 2014 2015 2017 Years - Laptop Motherboard - AliExpress
661-03279 Apple Logic Board 3.1GHz Intel Core i5 Quad Core 16GB HDD for iMac 21.5" Retina 4K Late 2015
Original A1419 Motherboard 820-4652-A For Apple iMac Retina 5K 27-inch Logic Board 661-00193 Late 2014 Mid 2015 EMC 2806 - AliExpress
Apple Genuine 661-03281 Logic Board 3.3GHz i7 16GB HDD Retina for iMac 21.5 inch Retina 4K Late 2015
Probably of no use to anyone here, but the 2.8GHz late 2015 iMac logic board requires a different heatsink than the 1.6GHz board because the CPU is in a different location. Ask
21.5" Late 2013 Apple iMac A1418 - Logic Board 2.9Ghz i5 - ME087LL/A - 661-7503 - TEKDEP.com Parts Tools Gadgets Repair