i have a pretty good GPU now.
besides crysis, what old games can i go back and play on ultra-super-max settings and would still give my GPU a good workout?
or what games looked really good on ultra at the time but struggled to deliver fps, and would now be a joke for a modern high end GPU?
Cities in Motion 1 with the free look and largest size maps mods. Even at 1440p (not to mention 4K) it will bring a modern CPU to its knees in the mid to late game if you completely disable fog.