Reviews
Summarizing
The processor that carries the Lenovo ThinkPad P53 it is one of the best there is currently in the market.
More exactly it is the 89 of more than 1,100 processors.
The graphics card, an Nvidia Quadro K5000M, is nowadays quite passable. We could say that in the middle range. You will be able to watch Youtube / Netflix/etc... in good quality (1080p or more) and you will be able to play comfortably the majority of games.
More exactly it is the 231 of more than 600 graphic cards.
About the RAM, with 28GB it is more than enough.
In a nutshell, it will allow you to do what you want and run most games, although not at its maximum quality.