Comment by exsf0859

I'll add that initial dev kits are typically released 18 months before the console launch, that means they are built using technology that is one generation behind the hardware that the actual console will use. In the old days before Moore's Law ended, that meant that the console had to have a much more expensive CPU and GPU, to try to match the expected performance of the console hardware. These days, with only marginal improvements in CPU and GPU from generation to generation, this is much less of an issue.