Chosen Solution

Would like to upgrade my 3.3 GHz Intel Core i5 to Intel Core i7 6700K found on this link. iMac (Retina 5K, 27-inch, Late 2015) https://www.amazon.com/Intel-Unlocked-Sk… Can I buy this and follow a guide from iFixit to install it?

First you have to make sure all the parts are compatible first then you most likely can.

i7 here: http://www.grooves.land/intel-core-6700k