[wtallis]

I think it's much less a philosophical difference and much more about what they had lying around. Intel had Atom core designs available to pair up with their desktop cores, and combining them into one chip was clearly a rush job rather than the plan from the start.

On the other hand, AMD only really has their Zen series of cores to use, but they rely more than Intel on automated layout tools so they can more easily port designs to a different fab process or do a second physical layout of the same architecture on the same process.