S.T.A.L.K.E.R: Call of Pripyat benchmark is a practical application to get detailed information on the efficiency of your graphics card and its configuration modes. This way you can check which of them is the most balanced to run high resolution games, like S.T.A.L.K.E.R: Call of Pripyat.
In this specific case, the check is done in one of the places of the S.T.A.L.K.E.R: Call of Pripyat game. The checking process in S.T.A.L.K.E.R: Call of Pripyat benchmark has four stages, using climate change in the image (day, night, rain and bright sunshine).
With the aim of checking your system, S.T.A.L.K.E.R: Call of Pripyat benchmark is made up of a series of options, in which are included different versions of DirecX, different screen resolutions, etc. You can check the results obtained with those done, and with those obtained by other players of the same game.