I want to perform PC games benchmark, there is no option in games to perform benchmark, So what's the method to take each game benchmark as the way Guru3d takes??
May I suggest you use titles with built in benchmarks like Tomb Raider (2016), Hitman (2016), Far Cry Primal, Ashes of Singularity, Total War: Warhammer, Tom Clancy's The Division, Shadow of Mordor, Thief.
in dx11 games he probably uses fraps....in dx12 games its way more difficult to explain not to mention do the tests....but they play the same area of the game and record the results. There again dx12 windows stores games add additional issues for them to deal with