The 3DMark Port Royal benchmark produces an overall Port Royal score and a Graphics test score. These scores are the same given that the benchmark is based on a single Graphics test. The scores are rounded to the nearest integer. The better a system's performance, the higher the score.

3DMark Port Royal score

The overall 3DMark Port Royal score is the same as the Graphics test score.

Port Royal score     =     S_graphics

S_graphics    =     Port Royal Graphics score

Graphics test score

The Graphics Test produces a raw performance result in frames per second. We multiply this result by a scaling constant to produce the Graphics score. The scaling constant is used to bring the score in line with traditional 3DMark score levels.

S_graphics    =     F_gt × 216

F_gt          =    The average frame rate from the Graphics test