Integrated Intel HD Graphics 520 vs Radeon R5 discrete M330

Good day! There are 2 variations of the same model of laptop with a discrete graphics card and without it, respectively.
CPU : Intel Core i5-6200U (Skylake) with integrated GPU Intel HD Graphics 520.
In the second variant it is proposed 520 Intel HD Graphics +discrete Radeon R5 M330.
Over all comparisons, the integrated graphics performance than discrete chip available. So is there any point in a discrete graphics card at all? What + it gives in this case? ( Well, except for the energy demand, temperature and price :) )
Characteristics of the graphics cards are attached.

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