3D mark is what you want to use because it gives you a score that many people understand to judge both the CPU and GPU together in a number of different ways.
realistically, you can use any game to benchmark but depending on the game you use, it might use more CPU, it might use more GPU, it might be more RAM heavy, it can vary.
use cs:go, minecraft, GTA5, Call of Duty, battlefield, battlefront, crysis 3, anything really.