Can this iMac cpu be upgraded?
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.