Iris 5100 is a pretty big improvement over Intel HD 3000, if the logic board fails I'm SOL, PCIe SSD vs. SATA III, USB 3 vs. USB 2, and Thunderbolt 2 > Thunderbolt 1.
Maybe I'm just trying to justify reasons. The thing about the new 4k iMac is it will cost around $2,000 with the upgrades I...