Chosen Solution
Trying to figure out if this cpu can be upgraded? And if not is it possible to replace the logic board?
The iMac “Core i5” 2.3 21.5-Inch Aluminum (Mid-2017/Kaby Lake) features a 14-nm “Kaby Lake” 2.3 GHz Intel “Core i5” processor (7360U) with two independent processor “cores” on a single chip, a 4 MB shared level 3 cache, 8 GB of 2133 MHz DDR4 SDRAM that is reportedly onboard – but actually can be upgraded later – a 1 TB (5400 RPM) hard drive, and an “integrated” Intel Iris Plus Graphics 640 graphics processor that shares system memory. You can check a full run down of your systems specs at https://everymac.com/systems/apple/imac/…. For the logic board replacement, check out the ifixit guide at iMac Intel 21.5" EMC 3068 Logic Board Replacement. Hope my answer helps you.
